[clang] WIP Add suppress weak loop assumptions visitor (PR #111258)

[Balazs Benics via cfe-commits]

steakhal wrote:

I'll close this as the PR (#109804) for which I made this visitor was also closed, [see](https://github.com/llvm/llvm-project/pull/109804#issuecomment-2532130313).


https://github.com/llvm/llvm-project/pull/111258