Add launcher preferences and modular landing studio [skip ci]

launcher/src-tauri/src/lib.rs

@@ -51,6 +51,7 @@ pub fn run() {
             commands::refresh_manifest,
             commands::set_panel_url,
             commands::save_settings,
+            commands::save_instance_options,
             commands::login_panel,
             commands::register_panel,
             commands::add_offline,