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

[Philipp Jung via cfe-commits]

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+.. title:: clang-tidy - cppcoreguidelines-use-enum-class
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+cppcoreguidelines-use-enum-class
+=============================
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+Finds plain non-class ``enum`` definitions that could use ``enum class``.
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JungPhilipp wrote:

Done

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