Refactor project into two standalone components

Split monorepo into separate units for future independent repositories:
- media-server/: Standalone FastAPI server with own README, requirements,
  config example, and CLAUDE.md
- haos-integration/: HACS-ready Home Assistant integration with hacs.json,
  own README, and CLAUDE.md

Both components now have their own .gitignore files and can be easily
extracted into separate repositories.

Also adds custom icon support for scripts configuration.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

haos-integration/README.md

@@ -0,0 +1,98 @@
+# Remote Media Player - Home Assistant Integration
+
+[![hacs_badge](https://img.shields.io/badge/HACS-Custom-41BDF5.svg)](https://github.com/hacs/integration)
+[![GitHub Release](https://img.shields.io/github/v/release/YOUR_USERNAME/haos-remote-media-player)](https://github.com/YOUR_USERNAME/haos-remote-media-player/releases)
+
+A Home Assistant custom integration that allows you to control a remote PC's media playback as a media player entity.
+
+## Features
+
+- Full media player controls (play, pause, stop, next, previous)
+- Volume control and mute
+- Seek support with smooth timeline updates
+- Displays current track info (title, artist, album, artwork)
+- Real-time updates via WebSocket (with HTTP polling fallback)
+- **Script buttons** - Execute pre-defined scripts (shutdown, restart, lock, sleep, etc.)
+- Configurable via Home Assistant UI
+
+## Requirements
+
+- Home Assistant 2024.1.0 or newer
+- A running **Media Server** on your PC
+
+### Media Server
+
+This integration requires the Media Server to be running on the PC you want to control.
+
+**Media Server Repository:** `TODO: Add repository URL`
+
+See the Media Server documentation for installation and setup instructions.
+
+## Installation
+
+### HACS (Recommended)
+
+1. Open HACS in Home Assistant
+2. Click the three dots menu > **Custom repositories**
+3. Add this repository URL: `https://github.com/YOUR_USERNAME/haos-remote-media-player`
+4. Select category: **Integration**
+5. Click **Add**
+6. Search for "Remote Media Player" and click **Download**
+7. Restart Home Assistant
+
+### Manual Installation
+
+1. Download the latest release from the [Releases](https://github.com/YOUR_USERNAME/haos-remote-media-player/releases) page
+2. Extract and copy the `custom_components/remote_media_player` folder to your Home Assistant `config/custom_components/` directory
+3. Restart Home Assistant
+
+## Configuration
+
+1. Go to **Settings** > **Devices & Services**
+2. Click **+ Add Integration**
+3. Search for "Remote Media Player"
+4. Enter the connection details:
+   - **Host**: IP address or hostname of your PC running Media Server
+   - **Port**: Server port (default: 8765)
+   - **API Token**: The authentication token from your Media Server
+   - **Name**: Display name for this media player (optional)
+
+## Usage
+
+Once configured, the integration creates:
+
+### Media Player Entity
+
+A full-featured media player entity with:
+- Play/Pause/Stop controls
+- Next/Previous track
+- Volume control and mute
+- Seek functionality
+- Current track information
+
+### Script Button Entities
+
+Button entities for each script defined on your Media Server:
+- Lock/unlock workstation
+- Shutdown, restart, sleep, hibernate
+- Custom scripts
+
+## Example Lovelace Card
+
+```yaml
+type: media-control
+entity: media_player.remote_media_player
+```
+
+## Documentation
+
+For detailed documentation, see [custom_components/remote_media_player/README.md](custom_components/remote_media_player/README.md).
+
+## Support
+
+- [Report an Issue](https://github.com/YOUR_USERNAME/haos-remote-media-player/issues)
+- [Media Server Repository](TODO)
+
+## License
+
+MIT License