[clang] [Clang] add -Wshift-bool warning to handle shifting of bool (PR #127336)

[Aaron Ballman via cfe-commits]

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@@ -138,6 +138,7 @@ Improvements to Clang's diagnostics
 - Fixed a bug where Clang's Analysis did not correctly model the destructor behavior of ``union`` members (#GH119415).
 - A statement attribute applied to a ``case`` label no longer suppresses
   'bypassing variable initialization' diagnostics (#84072).
+- The ``-Wshift-bool`` warning has been added to warn about shifting a ``boolean``. (#GH28334)
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AaronBallman wrote:

```suggestion
- The ``-Wshift-bool`` warning has been added to warn about shifting a boolean. (#GH28334)
```

https://github.com/llvm/llvm-project/pull/127336