Initial commit: Media server and Home Assistant integration

- FastAPI server for Windows media control via WinRT/SMTC
- Home Assistant custom integration with media player entity
- Script button entities for system commands
- Position tracking with grace period for track skip handling
- Server availability detection in HA entity

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

custom_components/remote_media_player/manifest.json

@@ -0,0 +1,12 @@
+{
+  "domain": "remote_media_player",
+  "name": "Remote Media Player",
+  "codeowners": [],
+  "config_flow": true,
+  "dependencies": [],
+  "documentation": "https://github.com/your-username/haos-integration-media-player",
+  "integration_type": "device",
+  "iot_class": "local_polling",
+  "requirements": ["aiohttp>=3.8.0"],
+  "version": "1.0.0"
+}