Allow passing args to ssh (#19336)

This is useful for passing a custom identity file, jump hosts, etc.

Unlike with the v1 feature, we won't support `gh`/`gcloud` ssh wrappers
(yet?). I think the right way of supporting those would be to let
extensions provide remote projects.

Closes #19118

Release Notes:

- SSH remoting: restored ability to set arguments for SSH

crates/workspace/src/persistence/model.rs

@@ -11,7 +11,7 @@ use db::sqlez::{
 };
 use gpui::{AsyncWindowContext, Model, View, WeakView};
 use project::Project;
-use remote::{ssh_session::SshProjectId, SshConnectionOptions};
+use remote::ssh_session::SshProjectId;
 use serde::{Deserialize, Serialize};
 use std::{
     path::{Path, PathBuf},
@@ -50,15 +50,6 @@ impl SerializedSshProject {
             })
             .collect()
     }
-
-    pub fn connection_options(&self) -> SshConnectionOptions {
-        SshConnectionOptions {
-            host: self.host.clone(),
-            username: self.user.clone(),
-            port: self.port,
-            password: None,
-        }
-    }
 }
 
 impl StaticColumnCount for SerializedSshProject {