[clang] [clang-tidy]Add new check bugprone-casting-through-void (PR #69465)

[Piotr Zegar via cfe-commits]

================
@@ -0,0 +1,32 @@
+.. title:: clang-tidy - bugprone-casting-through-void
+
+bugprone-casting-through-void
+=============================
+
+A check detects unsafe or redundant two-step casting operations involving ``void*``.
+
+Two-step type conversions via void* are discouraged for several reasons.
+
+1. They obscure code and impede its understandability, complicating maintenance.
+2. These conversions bypass valuable compiler support, erasing warnings related
+   to pointer alignment. It may violate strict aliasing rule and leading to
+   undefined behavior.
+3. In scenarios involving multiple inheritance, ambiguity and unexpected outcomes
+   can arise due to the loss of type information, posing runtime issues.
+
+In summary, avoiding two-step type conversions through void* ensures clearer code,
+maintains essential compiler warnings, and prevents ambiguity and potential runtime
+errors, particularly in complex inheritance scenarios.
+
+Examples:
+
+.. code-block:: c++
----------------
PiotrZSL wrote:

add new line after code-block

https://github.com/llvm/llvm-project/pull/69465