AssemblyUnhollower deobfuscation map generation | Fix for MissingKeyException and Type comparison

[CamelCaseName]

When trying to generate a map for House Party, I experienced the following error:
Unhandled Exception: System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary. at System.ThrowHelper.ThrowKeyNotFoundException() at System.Collections.Generic.Dictionary'2.get_Item(TKey key) at AssemblyUnhollower.Contexts.RewriteGlobalContext.GetNewAssemblyForOriginal(AssemblyDefinition oldAssembly) in F:\Lenny\source\repos\Il2CppAssemblyUnhollower\AssemblyUnhollower\Contexts\RewriteGlobalContext.cs:line 61 at AssemblyUnhollower.Contexts.AssemblyRewriteContext.RewriteTypeRef(TypeReference typeRef) in F:\Lenny\source\repos\Il2CppAssemblyUnhollower\AssemblyUnhollower\Contexts\AssemblyRewriteContext.cs:line 113 at AssemblyUnhollower.Passes.Pass12FillTypedefs.DoPass(RewriteGlobalContext context) in F:\Lenny\source\repos\Il2CppAssemblyUnhollower\AssemblyUnhollower\Passes\Pass12FillTypedefs.cs:line 36 at AssemblyUnhollower.DeobfuscationMapGenerator.GenerateDeobfuscationMap(UnhollowerOptions options) in F:\Lenny\source\repos\Il2CppAssemblyUnhollower\AssemblyUnhollower\DeobfuscationMapGenerator.cs:line 65 at AssemblyUnhollower.Program.Main(String[] args) in F:\Lenny\source\repos\Il2CppAssemblyUnhollower\AssemblyUnhollower\Program.cs:line 168

• I fixed this and a logic flaw(or a side effect of my fix, not sure) in the comparison as well so that maps are now generated correctly.
• Added more fallback if an assembly could not be found, at all times it was either mscorlib or Il2Cppmscorlib, so I added special cases.
• Removed the leading dot on missing empty namespaces so it looks more clean
• added handling for the System.Object

This shouldn't change anything about the main Unhollower functionality, only deobfuscation map generation.