feat(pinia): 添加 pinia 并做数据持久化

src/main.ts

@@ -2,5 +2,7 @@ import { createApp } from "vue";
 import App from "./App.vue";
 // 路由
 import router from "./router";
+// Pinia
+import { pinia } from "./store";
 
-createApp(App).use(router).mount("#app");
+createApp(App).use(router).use(pinia).mount("#app");

src/store/index.ts

@@ -0,0 +1,8 @@
+import { createPinia } from "pinia";
+import { createPersistedState } from "pinia-plugin-persistedstate";
+
+const pinia = createPinia();
+
+pinia.use(createPersistedState());
+
+export { pinia };