[clang] [clang-tidy] Add performance-move-smart-pointer-contents check. (PR #66139)

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+.. title:: clang-tidy - performance-move-smart-pointer-contents
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+performance-move-smart-pointer-contents
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+
+Given a smart pointer containing a movable type, such as a
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EugeneZelenko wrote:

Please synchronize first statement with Release Notes.

https://github.com/llvm/llvm-project/pull/66139