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

[Carlos Galvez via cfe-commits]

carlosgalvezp wrote:

Perhaps we can start with pointer-to-pointer only, yes. Pointer-int conversions are still implementation-defined, but I guess it's less of a problem than UB.

The original paper only checked that both inputs are not pointers:

```cpp
  !(is_pointer_v<From> &&
    is_pointer_v<To>) &&
```

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