[clang-tools-extra] [clang-tidy][modernize] Replace memmove/memcpy with std::copy (PR #122940)

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kidq330 wrote:

@maflcko I forgot abot this PR since I didn't get feedback on whether the approach is correct. I could probably find some time next week to fix the conflicts and refresh it

https://github.com/llvm/llvm-project/pull/122940