[clang-tools-extra] [clang-tidy] introduce a must use check (PR #76101)

[Tyler Rockwood via cfe-commits]

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@@ -0,0 +1,28 @@
+.. title:: clang-tidy - misc-must-use
+
+misc-must-use
+=============
+
+Allows for strictly enforce variables are used for specific classes, even with
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rockwotj wrote:

Done.

https://github.com/llvm/llvm-project/pull/76101