Add empty state for project panel (#3863)

This PR adds an empty state for the project panel.

It will now display an "Open a project" button.

Release Notes:

- Added an empty state for the project panel.
7f6770d272Marshall Bowers committed on 1/3/2024, 10:00:47 PM· committed by GitHubparent94536ba
2 files changedLine totals unavailable