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

[Aaron Ballman via cfe-commits]

AaronBallman wrote:

> 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.

No concerns from me, thanks!

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