Support zed://ssh (#19970)

Closes: #15070

Release Notes:

- Added support for `zed://ssh/<connnection>/<path>`

docs/src/remote-development.md

@@ -23,7 +23,7 @@ On your local machine, Zed runs its UI, talks to language models, uses Tree-sitt
 1. Once the Zed server is running, you will be prompted to choose a path to open on the remote server.
    > **Note:** Zed does not currently handle opening very large directories (for example, `/` or `~` that may have >100,000 files) very well. We are working on improving this, but suggest in the meantime opening only specific projects, or subfolders of very large mono-repos.
 
-For simple cases where you don't need any SSH arguments, you can run `zed ssh://[<user>@]<host>[:<port>]/<path>` to open a remote folder/file directly.
+For simple cases where you don't need any SSH arguments, you can run `zed ssh://[<user>@]<host>[:<port>]/<path>` to open a remote folder/file directly. If you'd like to hotlink into an SSH project, use a link of the format: `zed://ssh/[<user>@]<host>[:<port>]/<path>`.
 
 ## Supported platforms