[clang-tools-extra] [clang-tidy] add new check: modernize-use-scoped-lock (PR #126434)

[Piotr Zegar via cfe-commits]

================
@@ -91,6 +91,12 @@ Improvements to clang-tidy
 New checks
 ^^^^^^^^^^
 
+- New :doc:`use-scoped-lock
----------------
PiotrZSL wrote:

```suggestion
- New :doc:`modernize-use-scoped-lock
```

https://github.com/llvm/llvm-project/pull/126434