remote projects per user (#10594)

Release Notes:

- Made remote projects per-user instead of per-channel. If you'd like to
be part of the remote development alpha, please email hi@zed.dev.

---------

Co-authored-by: Bennet Bo Fenner <53836821+bennetbo@users.noreply.github.com>
Co-authored-by: Bennet <bennetbo@gmx.de>
Co-authored-by: Nate Butler <1714999+iamnbutler@users.noreply.github.com>
Co-authored-by: Nate Butler <iamnbutler@gmail.com>

crates/collab/src/tests/test_server.rs

@@ -284,6 +284,7 @@ impl TestServer {
             collab_ui::init(&app_state, cx);
             file_finder::init(cx);
             menu::init();
+            remote_projects::init(client.clone(), cx);
             settings::KeymapFile::load_asset("keymaps/default-macos.json", cx).unwrap();
         });