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

[Nick Desaulniers via llvm-commits]

nickdesaulniers wrote:

> I tried running clang-format but the diff was huge and beyond just my changes.

I usually do `git clang-format HEAD~N` where N is the number of commits of mine (N is optional when N == 1).

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