Add OpenAI-compatible API and Docker deployment

- Add FastAPI-based API in whisperx/api/
- Implement transcription endpoint compatible with OpenAI
- Added Dockerfile and docker-compose.yml for easy deployment
- Updated README with Docker instructions
- Added new script whisperx-serve for running the API

whisperx/api/serve.py

@@ -0,0 +1,16 @@
+import uvicorn
+
+
+def serve(host: str = "0.0.0.0", port: int = 8000, workers: int = 1):
+    """Run the WhisperX API server"""
+    uvicorn.run(
+        "whisperx.api.main:app",
+        host=host,
+        port=port,
+        workers=workers,
+        reload=False  # No reload for production
+    )
+
+
+if __name__ == "__main__":
+    serve()