feat: 增加播放控件消失时间延长10倍的设置

lib/pages/setting/play_setting.dart

@@ -85,7 +85,7 @@ class _PlaySettingState extends State<PlaySetting> {
           ),
           const SetSwitchItem(
             title: '双击快退/快进',
-            subTitle: '左侧双击快退，右侧双击快进',
+            subTitle: '左侧双击快退/右侧双击快进，关闭则双击均为暂停/播放',
             leading: Icon(Icons.touch_app_outlined),
             setKey: SettingBoxKey.enableQuickDouble,
             defaultVal: true,
@@ -139,6 +139,13 @@ class _PlaySettingState extends State<PlaySetting> {
             setKey: SettingBoxKey.enableAutoExit,
             defaultVal: true,
           ),
+          const SetSwitchItem(
+              title: '延长播放控件显示时间',
+              subTitle: '开启后延长至30秒，便于屏幕阅读器滑动切换控件焦点',
+              leading: Icon(Icons.timer_outlined),
+              setKey: SettingBoxKey.enableLongShowControl,
+              defaultVal: false
+          ),
           const SetSwitchItem(
             title: '全向旋转',
             subTitle: '小屏可受重力转为临时全屏，若系统锁定旋转仍触发请关闭，关闭会影响横屏适配',