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

[Baranov Victor via cfe-commits]

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@@ -0,0 +1,50 @@
+// RUN: %check_clang_tidy %s bugprone-loop-variable-copied-then-modified %t -- -config="{CheckOptions: {bugprone-loop-variable-copied-then-modified.IgnoreInexpensiveVariables: true}}" -- -I%S -std=c++!4
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vbvictor wrote:

Please break line in 2 (around config)

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