feat: dlna switch

lib/utils/global_data_cache.dart

@@ -53,6 +53,8 @@ class GlobalDataCache {
   static late bool enableAutoExpand;
   // 动态切换
   static late bool enableDynamicSwitch;
+  // 投屏开关
+  static bool enableDlna = false;
 
   // 私有构造函数
   GlobalDataCache._();
@@ -120,5 +122,6 @@ class GlobalDataCache {
         setting.get(SettingBoxKey.enableAutoExpand, defaultValue: false);
     enableDynamicSwitch =
         setting.get(SettingBoxKey.enableDynamicSwitch, defaultValue: true);
+    enableDlna = setting.get(SettingBoxKey.enableDlna, defaultValue: false);
   }
 }

lib/utils/storage.dart

@@ -115,7 +115,8 @@ class SettingBoxKey {
       enableAi = 'enableAi',
       enableAutoExpand = 'enableAutoExpand',
       defaultHomePage = 'defaultHomePage',
-      enableRelatedVideo = 'enableRelatedVideo';
+      enableRelatedVideo = 'enableRelatedVideo',
+      enableDlna = 'enableDlna';
 
   /// 外观
   static const String themeMode = 'themeMode',