[clang-tools-extra] [clang-tidy] Create bugprone-bit-cast-pointers check (PR #108083)

[Carlos Galvez via cfe-commits]

carlosgalvezp wrote:

Thanks for the clarifications, will address asap! 

It now comes to mind that we probably also want to check `memcpy(ptr, ptr)`, which is equivalent to `bit_cast`. In that case I wonder if the check name still holds or it should be named something else?

https://github.com/llvm/llvm-project/pull/108083