[clang-tools-extra] Add bugprone-loop-variable-copied-then-modified clang-tidy check. (PR #157213)

[via cfe-commits]

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+.. title:: clang-tidy - bugprone-loop-variable-copied-then-modified
+
+bugprone-loop-variable-copied-then-modified
+===========================================
+
+Detects when a loop variable is copied and then subsequently (possibly) modified
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EugeneZelenko wrote:

Please synchronize with statement in Release Notes.

https://github.com/llvm/llvm-project/pull/157213