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

[Carlos Galvez via cfe-commits]

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+.. title:: clang-tidy - modernize-use-integer-sign-comparison
+
+modernize-use-integer-sign-comparison
+=====================================
+
+Replace comparisons between signed and unsigned integers with their safe
+C++20 ``std::cmp_*`` alternative, if available.
+
+The check provides a replacement only for C++20 or later, otherwise
+it highlights the problem and expects the user to fix it manually.
+
+Examples of fixes created by the check:
+
+.. code-block:: c++
+
+  uint func(int a, uint b) {
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carlosgalvezp wrote:

"uint" is not a standard C++ type, use `unsigned int`

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