[clang-tools-extra] [clang-tidy] add misc-constexpr check (PR #162741)

[via cfe-commits]

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@@ -0,0 +1,517 @@
+//===--- UseConstexprCheck.cpp - clang-tidy--------------------------------===//
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EugeneZelenko wrote:

```suggestion
//===----------------------------------------------------------------------===//
```

https://github.com/llvm/llvm-project/pull/162741