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

[via cfe-commits]

https://github.com/vincent-mailhol commented:

Thanks for taking care of the issue I created.

For what it is worth, here is my review. I am not a contributor of the llvm project, so I only left superficial nitpicks.

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