feat: Implement intelligent skip feature with enhanced settings

- Added support for time input in minutes:seconds format for skipping segments.
- Introduced automatic skipping functionality for both opening and ending segments.
- Enhanced UI for skip settings with a floating configuration card.
- Implemented countdown timer for automatic next episode playback.
- Added batch settings for configuring multiple skip segments at once.
- Updated SkipController component to handle new skip logic and UI changes.
- Created comprehensive usage guide for the new skip feature.

src/lib/db.client.ts

@@ -47,6 +47,8 @@ export interface SkipSegment {
   end: number; // 结束时间（秒）
   type: 'opening' | 'ending'; // 片头或片尾
   title?: string; // 可选的描述
+  autoSkip?: boolean; // 是否自动跳过（默认true）
+  autoNextEpisode?: boolean; // 片尾是否自动跳转下一集（默认true，仅对ending类型有效）
 }
 
 export interface EpisodeSkipConfig {