[clang] [compiler-rt] [Sanitizer] add signed-integer-wrap sanitizer (PR #80089)

[Nick Desaulniers via cfe-commits]

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

I think this patch is good to go. Thanks for working on it!

cc @AaronBallman @efriedma-quic @rjmccall @nikic in case there's any last minute concerns.  I'm happy to sign off on this, but consider giving folks some time to speak up before landing this.

https://github.com/llvm/llvm-project/pull/80089