feat: Add one-shot attribute methods to FileSystemProtocol (Fixes #3648)

[wasim-builds]

Hey @weissi! 👋

As discussed in #3648, I've added one-shot APIs to FileSystemProtocol to make it easier to set file attributes without having to explicitly open and manage a file handle.

Implementation Details:

• Added setTimes, setLastAccessTime, and setLastDataModificationTime as default extension methods on FileSystemProtocol.
• Under the hood, these methods automatically wrap withFileHandle(forReadingAt:) so it avoids the O_RDWR APFS decompression penalty you mentioned.
• Applied the extensions to both NIOFS and _NIOFileSystem.

Let me know if you want any specific unit tests added or if this looks good to go! 🚀

[glbrntt]

This contains changes unrelated to the description; can you remove them? There are also no tests for the changes being made.

[wasim-builds]

Thanks for the review! I've removed the unrelated commit and added test cases in FileSystemTests.swift to cover setTimes, setLastAccessTime, and setLastDataModificationTime. Let me know if everything looks good now! 🚀

[wasim-builds]

Hey @glbrntt! I've rebased the branch to remove the stacked commits — this PR now only contains the FileSystem one-shot attribute methods (with tests). Ready for another look, thanks!

[wasim-builds]

@glbrntt Following up on your review — Ive removed the unrelated changes and added tests covering all three one-shot attribute methods. Could you take another look when you get a chance?