Add more documentation to `collab` (#4095)

This PR adds more documentation to the `collab` crate.

Release Notes:

- N/A

---------

Co-authored-by: Conrad <conrad@zed.dev>
cf5dc099fbMarshall Bowers committed on 1/17/2024, 6:38:12 PM· committed by GitHubparent4e4a1e0
15 files changedLine totals unavailable