feat(lxserver): add LXServer app package

新增LXServer音乐同步服务器与Web播放器应用包，包含v1.9.1和latest两个版本的部署配置、应用信息说明文档以及logo资源。

apps/lxserver/README_en.md

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+# LXServer
+
+LX Music Sync Server Enhanced Edition, a Node.js-based music sync server and web player.
+
+## Features
+
+- Modern web player with dark mode and multiple theme skins
+- Multi-source aggregated search supporting major music platforms
+- Cross-platform data synchronization for LX Music desktop and mobile
+- Subsonic protocol support for third-party clients like Yinliu, Feishin
+- Fully automated caching system for lyrics, links, and audio files
+- Lyrics card sharing feature with customizable poster generation
+- Access control with player password and admin/user permissions
+- Support for importing custom music source scripts
+
+## Usage
+
+### Default Ports
+
+- Web Player: 9527
+- Admin Console: 9527
+
+### Access URLs
+
+- Web Player: http://your-ip:9527/music (configurable via `PLAYER_PATH`)
+- Admin Console: http://your-ip:9527 (configurable via `ADMIN_PATH`)
+
+### Default Credentials
+
+- Admin Console Default Password: 123456 (change immediately after deployment)
+
+### Data Directories
+
+Application data is stored in the following directories:
+
+- `./data`: Sync snapshots, user information, and system settings
+- `./logs`: System runtime logs
+- `./cache`: Web player automated cache files
+- `./music`: Local music library directory
+
+## Environment Variables
+
+| Variable | Description | Default |
+|----------|-------------|---------|
+| FRONTEND_PASSWORD | Web admin interface password | 123456 |
+| ENABLE_WEBPLAYER_AUTH | Enable web player password | false |
+| WEBPLAYER_PASSWORD | Web player access password | 123456 |
+| PLAYER_PATH | Web player access path | /music |
+| ADMIN_PATH | Admin console access path | (empty) |
+| DISABLE_TELEMETRY | Disable anonymous telemetry | false |
+| SUBSONIC_ENABLE | Enable Subsonic protocol support | true |
+| SUBSONIC_PATH | Subsonic API access path | /rest |
+
+## Links
+
+- Website: https://xcq0607.github.io/lxserver/
+- GitHub: https://github.com/XCQ0607/lxserver
+- Documentation: https://xcq0607.github.io/lxserver/
+- Docker Hub: https://hub.docker.com/r/xcq0607/lxserver