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

[Baranov Victor via cfe-commits]

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+.. title:: clang-tidy - modernize-use-enum-class
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+modernize-use-enum-class
+=============================
+
+Scoped enums (enum class) should be preferred over unscoped enums:
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vbvictor wrote:

The first statement in this doc should be the same as in ReleaseNotes.rst.

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