feat(admin): 为区域接口添加缓存功能

- 为 city 接口添加 600 秒缓存
- 为 area 接口添加 600 秒缓存
- 提升区域数据访问性能
- 减少数据库查询压力
- 优化接口响应速度
- 支持更高效的区域信息获取

route/admin.php

@@ -8,6 +8,6 @@ use SixShop\LimitPurchase\Controller\Admin\{
 use think\facade\Route;
 use SixShop\System\Middleware\MacroPageMiddleware;
 
-Route::get('region/city/:id', [RegionController::class, 'city']);
-Route::get('region/area/:id', [RegionController::class, 'area']);
+Route::get('region/city/:id', [RegionController::class, 'city'])->cache(600);
+Route::get('region/area/:id', [RegionController::class, 'area'])->cache(600);
 Route::resource('rule', RuleController::class)->middleware(['auth', MacroPageMiddleware::class]);