Add 'Open Remote...' to File Menu (#26288)

Added some spacers while I was at it.

Release Notes:

- Added 'Open Remote...' to File menu

crates/zed/src/zed/app_menus.rs

@@ -69,11 +69,14 @@ pub fn app_menus() -> Vec<Menu> {
                         create_new_window: true,
                     },
                 ),
+                MenuItem::action("Open Remote...", zed_actions::OpenRemote),
                 MenuItem::separator(),
                 MenuItem::action("Add Folder to Project…", workspace::AddFolderToProject),
+                MenuItem::separator(),
                 MenuItem::action("Save", workspace::Save { save_intent: None }),
                 MenuItem::action("Save As…", workspace::SaveAs),
                 MenuItem::action("Save All", workspace::SaveAll { save_intent: None }),
+                MenuItem::separator(),
                 MenuItem::action(
                     "Close Editor",
                     workspace::CloseActiveItem {