Collect all errors from all passes, rename and document some of them

[Mingun]

Some fields in data model filled by the compilation passes which is not obvious at all. To make this clear, I document properties which is filled by passes, document that passes and rename one of them. In the end, now all passes implements PrepocessStep and handled uniformly. Error in one value instance no more prevents from reporting errors in other value instances or reporting warnings and type problems

[Mingun]

That PR adds new test failure (in comparison to 83dde4b), but I'm unsure, why:

[info] - encoding_str_missing *** FAILED ***
[info]   [encoding_str_missing.ksy: /seq/0:
[info]   	error: string type, but no encoding found
[info]   ]
[info]     did not equal
[info]   [encoding_str_missing.ksy: /seq/0:
[info]   	error: string type, but no encoding found
[info]
[info]   encoding_str_missing.ksy: /seq/1:
[info]   	error: string type, but no encoding found
[info]
[info]   encoding_str_missing.ksy: /instances/baz:
[info]   	error: string type, but no encoding found
[info]   ] (SimpleMatchers.scala:34)

For some unknown reason only the first encoding error is detected in

# encoding_str_missing.ksy: /seq/0:
# 	error: string type, but no encoding found
#
# encoding_str_missing.ksy: /seq/1:
# 	error: string type, but no encoding found
#
# encoding_str_missing.ksy: /instances/baz:
# 	error: string type, but no encoding found
#
meta:
  id: encoding_str_missing
seq:
  - id: foo
    type: strz
  - id: bar
    type: strz
instances:
  baz:
    pos: 1
    type: strz

[generalmimon]

@Mingun:

That PR adds new test failure, but I'm unsure, why

See

• Add formats_err/encoding_str_missing.ksy kaitai_struct_tests#138
• Resolve meta #326