clang-tidy module: copy .gitignore from top level
Since !8364 (merged), .gitignore entries have been pinned to the top-level .gitignore file. Copy these entries into a .gitignore for the clang-tidy module.
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Since !8364 (merged), .gitignore entries have been pinned to the top-level .gitignore file. Copy these entries into a .gitignore for the clang-tidy module.