Better reflection type name parser for the AOT compiler

[MichalStrehovsky]

We should refactor the type name parser used by the reflection stack to be reusable from the compiler. IL Linker already uses that parser, but we don't want another fork - we want a way to compile the exact same file, potentially with ifdefs if needed for both runtime reflection stack and the compiler.

runtime/src/coreclr/tools/aot/ILCompiler.Compiler/Compiler/Dataflow/ReflectionMarker.cs

Lines 75 to 81 in a660c0f

	// NativeAOT doesn't have a fully capable type name resolver yet
	// Once this is implemented don't forget to wire up marking of type forwards which are used in generic parameters
	if (!ILCompiler.DependencyAnalysis.ReflectionMethodBodyScanner.ResolveType(typeName, callingModule, diagnosticContext.Origin.MemberDefinition!.Context, out TypeDesc foundType, out ModuleDesc referenceModule))
	{
	type = default;
	return false;
	}

Success criteria:

Type? t = Type.GetType("System.Collections.Generic.List`1[[System.DayOfWeek, System.Runtime]], System.Collections");
Console.WriteLine(t != null);

Should print non-null.

[vitek-karas]

Also the parser should detect type names without assembly qualifier and produce IL2105 warning (search for this number in the linker tests to see the expected behavior).