migrate root store to composition API and typescript

src/MobileApp.vue

@@ -13,7 +13,7 @@ import routes from './router/mobile.js';
 
 import { useI18n } from '@/locales/helpers.ts';
 
-import { useRootStore } from '@/stores/index.js';
+import { useRootStore } from '@/stores/index.ts';
 import { useSettingsStore } from '@/stores/setting.ts';
 import { useEnvironmentsStore } from '@/stores/environment.ts';
 import { useUserStore } from '@/stores/user.ts';