[clang] [clang][Sema] Suggest/Hint Standard Library Include File (PR #146227)

[Erich Keane via cfe-commits]

https://github.com/erichkeane commented:

I'm not really a fan of how we're doing this.  This should only be caused by a failed lookup.  This also seems about 2x as complicated as it needs to be.  I like the idea ehre, but not at this level of complexity.

@AaronBallman perhaps has a better idea of extended tooling.

https://github.com/llvm/llvm-project/pull/146227