Add terminal::Toggle (#37585)

Co-Authored-By: Brandan <b5@n0.computer>

Release Notes:

- Added a new action `terminal::Toggle` that is by default bound to
'ctrl-\`'. This copies the default behaviour from VSCode and Jetbrains
where the terminal opens and closes correctly. If you'd like the old
behaviour you can rebind 'ctrl-\`' to `terminal::ToggleFocus`

Co-authored-by: Brandan <b5@n0.computer>

crates/workspace/src/workspace.rs

@@ -3093,6 +3093,16 @@ impl Workspace {
         }
     }
 
+    pub fn close_panel<T: Panel>(&self, window: &mut Window, cx: &mut Context<Self>) {
+        for dock in self.all_docks().iter() {
+            dock.update(cx, |dock, cx| {
+                if dock.panel::<T>().is_some() {
+                    dock.set_open(false, window, cx)
+                }
+            })
+        }
+    }
+
     pub fn panel<T: Panel>(&self, cx: &App) -> Option<Entity<T>> {
         self.all_docks()
             .iter()