[llvm] [clang] [ASan][Driver] Add sanitize-target flag to support enabling ASan in device or host compilation (PR #76127)

[Aaron Ballman via cfe-commits]

https://github.com/AaronBallman requested changes to this pull request.

I had some conversations with @jinge90 offline and we're now thinking that perhaps a better approach is to have a more general feature for specifying host-only and target-only options instead of having each option split into two. Marking this review as requesting changes so it doesn't get accidentally accepted.

https://github.com/llvm/llvm-project/pull/76127