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/Cargo.toml

@@ -93,6 +93,7 @@ notifications = { workspace = true, features = ["test-support"] }
 pretty_assertions.workspace = true
 project = { workspace = true, features = ["test-support"] }
 release_channel.workspace = true
+remote_projects.workspace = true
 rpc = { workspace = true, features = ["test-support"] }
 sea-orm = { version = "0.12.x", features = ["sqlx-sqlite"] }
 serde_json.workspace = true