Implement mtime and atime copying
FWIW I need exactly this feature to solve https://github.com/heroku/buildpacks-ruby/issues/302#issuecomment-2415128173. I found another crate https://crates.io/crates/cp_r, however that crate is missing options I need (like the ability to overwrite an existing file) that fs_extra has.
I see this was opened nearly 3 years ago and there's been no comment. I'm unsure if it got reviewed and rejected without a comment (by accident, it happens) or if perhaps it got lost in the shuffle and would be accepted either in its current state or with some changes.
@schneems This feature should work. The test for this passes, even if other tests in the project seem not to pass. I would probably mark the PR as WIP if it did not work.
@schneems the author of the project is busy with paid work, which is why there was no comment