fix: introduce a custom AssemblyResolver to resolve AssemblyResolutionException in Mono.Cecil

[labbbirder]

This should be the fix of the following issue:

When injecting [assembly:InternalsVisibleTo], the referenced assembly can not be resolved.

[handzlikchris]

thanks - I'll check it out.

Can't say I've seen this error - can you share how to repro?

[labbbirder]

I retried to repro it, but the problem no longer occurs, even I recovered my workspace with git reset --hard to that point.

The issue first arose when I initially integrated FSR into my project. Every time I saved a file, the reload callback threw an AssemblyResolutionException (Cecil failed to resolve UniTask.dll during the assembly.Write operation inside CreateAssemblyWithInternalsContentsVisibleTo). This persisted until I made the changes described in this edition.

Upon reviewing the injection code, everything appears to be correct. There is no reason for Cecil to import UniTask for just importing a BCL attribute InternalsVisibleTo.

My project also includes other weaving and detouring tools, which may introduce the possibility of a race condition (the most likely I think).

This pull request can remain as a draft until anyother encouters with it, and I'll provide more information about it when I find something.