feat: add show item on system tray (#533)

ui/flutter/lib/app/modules/app/controllers/app_controller.dart

@@ -198,6 +198,13 @@ class AppController extends GetxController with WindowListener, TrayListener {
       await trayManager.setIcon('assets/tray_icon/icon.png');
     }
     final menu = Menu(items: [
+      MenuItem(
+        label: "show".tr,
+        onClick: (menuItem) async => {
+          await windowManager.show(),
+        },
+      ),
+      MenuItem.separator(),
       MenuItem(
         label: "create".tr,
         onClick: (menuItem) async => {
@@ -205,7 +212,6 @@ class AppController extends GetxController with WindowListener, TrayListener {
           await Get.rootDelegate.offAndToNamed(Routes.CREATE),
         },
       ),
-      MenuItem.separator(),
       MenuItem(
         label: "startAll".tr,
         onClick: (menuItem) async => {continueAllTasks()},