fix: eslint errors

apps/web-ele/src/views/mp/menu/data.ts

@@ -0,0 +1,9 @@
+/** 菜单未选中标识 */
+export const MENU_NOT_SELECTED = '__MENU_NOT_SELECTED__';
+
+/** 菜单级别枚举 */
+export enum Level {
+  Child = '2',
+  Parent = '1',
+  Undefined = '0',
+}