feat: 添加unplugin-auto-import支持自动导入常用API

添加unplugin-auto-import插件配置，自动导入vue、vue-router等常用API
更新tsconfig.json包含auto-imports.d.ts类型声明文件
修改文档说明开发时注意事项

package.json

@@ -112,6 +112,7 @@
     "standard-version": "^9.5.0",
     "typescript": "^5.9.3",
     "typescript-eslint": "^8.46.1",
+    "unplugin-auto-import": "^20.2.0",
     "vite": "^7.1.10",
     "vite-plugin-electron": "^0.29.0",
     "vite-plugin-electron-renderer": "^0.14.6",