[clang] [Clang][Driver] Expose `-fno-eliminate-unused-debug-types` to clang-cl (PR #95259)

[Alexandre Ganea via cfe-commits]

aganea wrote:

Thanks @amykhuang for taking a look!

I won't close https://github.com/llvm/llvm-project/issues/46924 right away, since we also need https://reviews.llvm.org/D89286. Do you mind if I took ownership of that patch and send a PR crediting you?

https://github.com/llvm/llvm-project/pull/95259