feat: 添加 useRouterBack 组合函数，更新相关组件以支持返回功能，优化 API 类型定义，更新依赖版本

src/router/auth.ts

@@ -1,20 +1,6 @@
 import type { RouteRecordRaw } from "vue-router";
 
 const routes: Array<RouteRecordRaw> = [
-  // {
-  //   path: "/auth",
-  //   component: () => import("@/views/auth/index.vue"),
-  //   children: [
-  //     {
-  //       path: "/auth/login",
-  //       component: () => import("@/views/auth/login/index.vue"),
-  //     },
-  //     {
-  //       path: "/auth/signup",
-  //       component: () => import("@/views/auth/signup/index.vue"),
-  //     },
-  //   ],
-  // },
   {
     path: "/auth/login",
     component: () => import("@/views/auth/login/index.vue"),