[clang] [WIP][DO NOT MERGE][Clang][Driver] Emit warning when -fsanitize-trap=<...> is passed without associated -fsanitize=<...> (PR #147997)

[Dan Liew via cfe-commits]

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

Looks good for the sketch patch. I have a few minor questions and nits that I've left. Please add a few driver test cases to illustrate how you expect this to work (including a test case that suppresses the warning).

https://github.com/llvm/llvm-project/pull/147997