feat: implement gas and delivery admin systems

frontend/gas_admin/src/store/index.ts

@@ -0,0 +1,9 @@
+import { createPinia } from 'pinia';
+import useAppStore from './modules/app';
+import useTabBarStore from './modules/tab-bar';
+import useUserStore from './modules/user';
+
+const pinia = createPinia();
+
+export { useAppStore, useTabBarStore, useUserStore };
+export default pinia;