[clang] Add new flag -Wpointer-integer-ordered-compare (PR #88489)

[via cfe-commits]

https://github.com/vincent-mailhol approved this pull request.

As far as my understanding of the LLVM project goes, this change looks good to me. I am not an expert of this project, but regardless and for what it is worth, here is my approval (with one nitpick).

https://github.com/llvm/llvm-project/pull/88489