feat: drag subtitle

Closes #588

Signed-off-by: bggRGjQaUbCoE <githubaccount56556@proton.me>

lib/pages/setting/widgets/model.dart

@@ -2098,6 +2098,13 @@ List<SettingsModel> get extraSettings => [
         setKey: SettingBoxKey.showDynActionBar,
         defaultVal: true,
       ),
+      SettingsModel(
+        settingsType: SettingsType.sw1tch,
+        title: '启用拖拽字幕调整底部边距',
+        leading: Icon(MdiIcons.dragVariant),
+        setKey: SettingBoxKey.enableDragSubtitle,
+        defaultVal: false,
+      ),
       SettingsModel(
         settingsType: SettingsType.sw1tch,
         enableFeedback: true,

lib/pages/video/detail/widgets/header_control.dart

@@ -1238,9 +1238,9 @@ class HeaderControlState extends State<HeaderControl> {
                         data: sliderTheme,
                         child: Slider(
                           min: 0,
-                          max: 100,
+                          max: 200,
                           value: subtitlePaddingB.toDouble(),
-                          divisions: 100,
+                          divisions: 200,
                           label: '$subtitlePaddingB',
                           onChanged: (double val) {
                             updateBottomPadding(val.round());