[clang-tools-extra] [clang-tidy] Add support for in-class initializers in readability-redundant-member-init (PR #77206)

[via cfe-commits]

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@@ -487,6 +487,10 @@ Changes in existing checks
   <clang-tidy/checks/readability/non-const-parameter>` check to ignore
   false-positives in initializer list of record.
 
+- Improved :doc:`readability-redundant-member-init
+  <clang-tidy/checks/readability/redundant-member-init>` check to support
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phyBrackets wrote:

Probably a better description might be 
`Enhanced it to now also detect redundant in-class initializers.`

https://github.com/llvm/llvm-project/pull/77206