Rename RemoteProject -> DevServerProject (#11301)

Co-Authored-By: Mikayla <mikayla@zed.dev>

In a fit of ill-advisedness I called these things remote projects;
forgetting that remote project is also what we call collaboratively
shared projects.

Release Notes:

- N/A

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Co-authored-by: Mikayla <mikayla@zed.dev>
Co-authored-by: Bennet <bennetbo@gmx.de>