[clang-tools-extra] [clang-tidy] Create a check for signed and unsigned integers comparison (PR #113144)

[Carlos Galvez via cfe-commits]

carlosgalvezp wrote:

Nit tip: the additional `fixup!` in the commit message for each additional commit is rather distracting, it would be best if each commit were be named after the changes it introduces w.r.t. the previous commit. 

https://github.com/llvm/llvm-project/pull/113144