[clang-tools-extra] Add check 'modernize-use-enum-class' (PR #138282)

[Philipp Jung via cfe-commits]

================
@@ -0,0 +1,26 @@
+.. title:: clang-tidy - modernize-use-enum-class
+
+modernize-use-enum-class
+=============================
+
+Scoped enums (enum class) should be preferred over unscoped enums:
----------------
JungPhilipp wrote:

Done

https://github.com/llvm/llvm-project/pull/138282