Revamped package versioning, added NuGet.org publishing, did general cleanup.

* Added .editorconfig
* Added publishing to NuGet.org
* Completely tore out "smart" versioning system (it was more trouble than it was wroth.)
* Enabled using the informational version for the package version now that GitHub Packages doesn't choke on build metadata.
* Removed x64 restrictions from ClangSharp.Pathogen (the assemblies aren't really x64-specific, the runtime is.)
* Removed VersionPrefix from both projects. (We don't really support them shipping separately.)
* Added Directory.Build.* protection to the LLVM Visual Studio CMake output folder
* Modified Directory.Build.* pattern to match Biohazrd.
* Enabled embedding untracked sources (this is required for NuGet Package Explorer determinism checks to be happy.)
* Added building to central bin/obj folders.
* Enabled error if there's no NuGet packages to upload.
* Changed the BuildOutput artifact to be less aggressive and to upload even when building failed.
* Added disclaimer to NuGet package description that ClangSharp.Pathogen is primarily intended to support Biohazrd.

Fixes MochiLibraries#3
Contributes to MochiLibraries/Biohazrd#214

Author: PathogenDavid

Diff for: .editorconfig

@@ -0,0 +1,259 @@
+root = true
+
+[*]
+indent_style = space
+
+#--------------------------------------------------------------------------------------------------
+# XML and JSON files
+#--------------------------------------------------------------------------------------------------
+[*.{xml,csproj,vcxproj,vcxproj.filters,proj,projitems,shproj,props,targets,ruleset,config,nuspec,resx,vsixmanifest,vsct}]
+indent_size = 2
+
+[*.json]
+indent_size = 2
+
+#--------------------------------------------------------------------------------------------------
+# C++
+#--------------------------------------------------------------------------------------------------
+[*.{c,cpp,h,hpp,ixx}]
+indent_size = 4
+charset = utf-8-bom
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+#--------------------------------------------------------------------------------------------------
+# C#
+#--------------------------------------------------------------------------------------------------
+# See the following documentation for the C#/.NET-specific rules to follow:
+# https://docs.microsoft.com/en-us/dotnet/fundamentals/code-analysis/code-style-rule-options
+[*.{cs,csx}]
+indent_size = 4
+charset = utf-8-bom
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+#------------------------------------------------------------------------------
+# Code style rules
+#------------------------------------------------------------------------------
+# https://docs.microsoft.com/en-us/dotnet/fundamentals/code-analysis/style-rules/
+
+#----------------------------------------------------------
+# Language Rules
+#----------------------------------------------------------
+
+# Self access qualification
+dotnet_style_qualification_for_field = false:none
+dotnet_style_qualification_for_property = false:none
+dotnet_style_qualification_for_method = false:none
+dotnet_style_qualification_for_event = false:none
+
+# Language keyword vs full type name
+# Predefined for members, etc does not create a message because the explicitly sized types are conveient in interop scenarios where the bit size matters.
+dotnet_style_predefined_type_for_locals_parameters_members = true:none
+dotnet_style_predefined_type_for_member_access = false:suggestion
+
+# Modifiers
+# csharp_preferred_modifier_order = # Default is fine. It isn't expected this would be overriden in the IDE.
+# We'd like this to be a warning, but it complains on partials in non-primary files.
+dotnet_style_require_accessibility_modifiers = always:none
+dotnet_style_readonly_field = true:suggestion
+csharp_prefer_static_local_function = true:suggestion
+
+# Parentheses
+dotnet_style_parentheses_in_arithmetic_binary_operators = always_for_clarity:none
+dotnet_style_parentheses_in_relational_binary_operators = always_for_clarity:none
+dotnet_style_parentheses_in_other_binary_operators = always_for_clarity:none
+dotnet_style_parentheses_in_other_operators = never_if_unnecessary:none
+
+# Expression-level preferences
+dotnet_style_object_initializer = true:suggestion
+# This is not enforced because there's too many situations where this hides the variable declaration in a way that harms understanding of the code.
+csharp_style_inlined_variable_declaration = true:none
+dotnet_style_collection_initializer = true:suggestion
+dotnet_style_prefer_auto_properties = true:none
+dotnet_style_explicit_tuple_names = true:warning
+csharp_prefer_simple_default_expression = true:suggestion
+dotnet_style_prefer_inferred_tuple_names = true:none
+dotnet_style_prefer_inferred_anonymous_type_member_names = true:none
+csharp_style_pattern_local_over_anonymous_function = true:warning
+csharp_style_deconstructed_variable_declaration = true:suggestion
+dotnet_style_prefer_conditional_expression_over_assignment = true:none
+dotnet_style_prefer_conditional_expression_over_return = true:none
+dotnet_style_prefer_compound_assignment = true:suggestion
+dotnet_style_prefer_simplified_boolean_expressions = true:none
+csharp_style_implicit_object_creation_when_type_is_apparent = true:suggestion
+
+# Null checking
+csharp_style_throw_expression = true:none
+dotnet_style_coalesce_expression = true:suggestion
+dotnet_style_null_propagation = true:suggestion
+dotnet_style_prefer_is_null_check_over_reference_equality_method = true:suggestion
+# Not using safe navigation for event invocation has thread safety problems.
+csharp_style_conditional_delegate_call = true:warning
+
+# Use of `var`
+csharp_style_var_for_built_in_types = false:warning
+# Use target-typed new instead.
+csharp_style_var_when_type_is_apparent = false:warning
+csharp_style_var_elsewhere = false:warning
+
+# Expression-bodied members
+csharp_style_expression_bodied_constructors = true:suggestion
+csharp_style_expression_bodied_methods = true:suggestion
+csharp_style_expression_bodied_operators = true:suggestion
+csharp_style_expression_bodied_properties = true:suggestion
+csharp_style_expression_bodied_indexers = true:suggestion
+csharp_style_expression_bodied_accessors = true:suggestion
+csharp_style_expression_bodied_lambdas = true:suggestion
+csharp_style_expression_bodied_local_functions = true:suggestion
+
+# Pattern matching
+csharp_style_pattern_matching_over_as_with_null_check = true:suggestion
+csharp_style_pattern_matching_over_is_with_cast_check = true:warning
+csharp_style_prefer_switch_expression = true:suggestion
+csharp_style_prefer_pattern_matching = true:none
+csharp_style_prefer_not_pattern = true:suggestion
+
+# Code block preferences
+csharp_prefer_braces = true:warning
+csharp_prefer_simple_using_statement = true:none
+
+# Using directive placement
+csharp_using_directive_placement = outside_namespace:warning
+
+# File header
+file_header_template = unset
+
+#----------------------------------------------------------
+# Unnecessary code rules
+#----------------------------------------------------------
+# Simplify member access -- These tend to be more annoying than anything
+dotnet_diagnostic.IDE0002.severity = none
+# Remove unnecessary cast -- Sometimes these clarify the intent of the code.
+dotnet_diagnostic.IDE0004.severity = suggestion
+csharp_style_unused_value_expression_statement_preference = discard_variable
+csharp_style_unused_value_assignment_preference = discard_variable
+dotnet_code_quality_unused_parameters = all
+# Remove unnecessary equality operator -- This covers things like `x == true`, sometimes these clarify the intent of the code.
+dotnet_diagnostic.IDE0100.severity = none
+
+#----------------------------------------------------------
+# Formatting rules
+#----------------------------------------------------------
+# (These are mostly Visual Studio defaults, and are simply here to enforce consistency.)
+dotnet_sort_system_directives_first = false
+dotnet_separate_import_directive_groups = false
+
+# Newlines
+csharp_new_line_before_open_brace = all
+csharp_new_line_before_else = true
+csharp_new_line_before_catch = true
+csharp_new_line_before_finally = true
+csharp_new_line_before_members_in_object_initializers = true
+csharp_new_line_before_members_in_anonymous_types = true
+csharp_new_line_between_query_expression_clauses = true
+
+# Indentation
+csharp_indent_case_contents = true
+csharp_indent_switch_labels = true
+csharp_indent_labels = flush_left
+csharp_indent_block_contents = true
+csharp_indent_braces = false
+csharp_indent_case_contents_when_block = false
+
+# Spacing
+csharp_space_after_cast = false
+csharp_space_after_keywords_in_control_flow_statements = true
+csharp_space_between_parentheses = false
+csharp_space_before_colon_in_inheritance_clause = true
+csharp_space_after_colon_in_inheritance_clause = true
+csharp_space_around_binary_operators = before_and_after
+csharp_space_between_method_declaration_parameter_list_parentheses = false
+csharp_space_between_method_declaration_empty_parameter_list_parentheses = false
+csharp_space_between_method_declaration_name_and_open_parenthesis = false
+csharp_space_between_method_call_parameter_list_parentheses = false
+csharp_space_between_method_call_empty_parameter_list_parentheses = false
+csharp_space_between_method_call_name_and_opening_parenthesis = false
+csharp_space_after_comma = true
+csharp_space_before_comma = false
+csharp_space_after_dot = false
+csharp_space_before_dot = false
+csharp_space_after_semicolon_in_for_statement = true
+csharp_space_before_semicolon_in_for_statement = false
+csharp_space_around_declaration_statements = false
+csharp_space_before_open_square_brackets = false
+csharp_space_between_empty_square_brackets = false
+csharp_space_between_square_brackets = false
+
+# Wrapping
+csharp_preserve_single_line_statements = false
+csharp_preserve_single_line_blocks = true
+
+#------------------------------------------------------------------------------
+# Naming Conventions
+#------------------------------------------------------------------------------
+# https://docs.microsoft.com/en-us/dotnet/fundamentals/code-analysis/style-rules/naming-rules
+
+#----------------------------------------------------------
+# Interfaces
+#----------------------------------------------------------
+dotnet_naming_style.interface_style.capitalization = pascal_case
+dotnet_naming_style.interface_style.required_prefix = I
+
+dotnet_naming_symbols.interface_symbols.applicable_kinds = interface
+dotnet_naming_symbols.interface_symbols.applicable_accessibilities = *
+
+dotnet_naming_rule.interface_rule.symbols = interface_symbols
+dotnet_naming_rule.interface_rule.style = interface_style
+dotnet_naming_rule.interface_rule.severity = suggestion
+
+#----------------------------------------------------------
+# Type Parameters
+#----------------------------------------------------------
+dotnet_naming_style.type_parameter_style.capitalization = pascal_case
+dotnet_naming_style.type_parameter_style.required_prefix = T
+
+dotnet_naming_symbols.type_parameter_symbols.applicable_kinds = type_parameter
+dotnet_naming_symbols.type_parameter_symbols.applicable_accessibilities = *
+
+dotnet_naming_rule.type_parameter_rule.symbols = type_parameter_symbols
+dotnet_naming_rule.type_parameter_rule.style = type_parameter_style
+dotnet_naming_rule.type_parameter_rule.severity = suggestion
+
+#----------------------------------------------------------
+# Async Methods
+#----------------------------------------------------------
+dotnet_naming_style.async_method_style.capitalization = pascal_case
+dotnet_naming_style.async_method_style.required_suffix = Async
+
+dotnet_naming_symbols.async_method_symbols.applicable_kinds = method, local_function
+dotnet_naming_symbols.async_method_symbols.applicable_accessibilities = *
+dotnet_naming_symbols.async_method_symbols.required_modifiers = async
+
+dotnet_naming_rule.async_method_rule.symbols = async_method_symbols
+dotnet_naming_rule.async_method_rule.style = async_method_style
+dotnet_naming_rule.async_method_rule.severity = suggestion
+
+#----------------------------------------------------------
+# General PascalCase Symbols
+#----------------------------------------------------------
+dotnet_naming_style.pascal_style.capitalization = pascal_case
+
+dotnet_naming_symbols.pascal_symbols.applicable_kinds = namespace, class, struct, interface, enum, property, method, field, event, delegate, type_parameter, local_function
+dotnet_naming_symbols.pascal_symbols.applicable_accessibilities = *
+
+dotnet_naming_rule.pascal_rule.symbols = pascal_symbols
+dotnet_naming_rule.pascal_rule.style = pascal_style
+dotnet_naming_rule.pascal_rule.severity = suggestion
+
+#----------------------------------------------------------
+# General camelCase Symbols
+#----------------------------------------------------------
+dotnet_naming_style.camel_style.capitalization = camel_case
+
+dotnet_naming_symbols.camel_symbols.applicable_kinds = parameter, local
+dotnet_naming_symbols.camel_symbols.applicable_accessibilities = *
+
+dotnet_naming_rule.camel_rule.symbols = camel_symbols
+dotnet_naming_rule.camel_rule.style = camel_style
+dotnet_naming_rule.camel_rule.severity = suggestion