feat: 添加 Arco Design 组件库并重构应用结构，移除 HelloWorld 组件，更新路由配置

src/routes/router.ts

@@ -0,0 +1,8 @@
+import { createWebHashHistory, createRouter } from "vue-router";
+import HomeView from "../views/HomeView.vue";
+const routes = [{ path: "/", component: HomeView }];
+const router = createRouter({
+  history: createWebHashHistory(),
+  routes,
+});
+export default router;