[clang] Test locally scoped resources (PR #190037)

[Justin Bogner via cfe-commits]

https://github.com/bogner approved this pull request.

Repeating `local_resource_` in every filename seems redundant if they're in `Local-Resources` subdirectory. I'd say either keep the directory and drop the prefix on the filename or just drop the directories, but either way is fine.

https://github.com/llvm/llvm-project/pull/190037