[clang-tools-extra] [clang-tidy] Add check to diagnose coroutine-hostile RAII objects (PR #68738)

[Sam McCall via cfe-commits]

https://github.com/sam-mccall commented:

Sorry to arrive late with this.

This looks pretty solid, all comments optional, happy to stamp a followup commit if you find them useful.

https://github.com/llvm/llvm-project/pull/68738