[clang] [Clang] Add wraps attribute (for granular integer overflow handling) (PR #86618)

[Breno Leitao via cfe-commits]

leitao wrote:

Thanks for working on this @JustinStitt . This might be useful to help the code to be explict about fields that are expected to wrap, and tag it properly.

https://github.com/llvm/llvm-project/pull/86618