[clang-tools-extra] [clangd] Add CodePatterns config option under Completion (PR #137613)

[Nathan Ridge via cfe-commits]

https://github.com/HighCommander4 requested changes to this pull request.

Thanks, the patch and tests look pretty good. I think we should leave out the command-line arg, but otherwise should be good to go.

https://github.com/llvm/llvm-project/pull/137613