Move edit prediction metrics into shared crate (#53912)

Release Notes:

- N/A

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Co-authored-by: Ben Kunkle <ben@zed.dev>
edac6a7b7aOleksiy Syvokon committed on 4/14/2026, 6:04:10 PM· committed by GitHubparenta33a1eb
18 files changedLine totals unavailable