Initial commit: Video detection platform with YOLO models

Features:
- Fire detection (YOLOv10)
- Helmet detection (YOLOv8)
- Crowd detection (YOLOv8)
- Smoking detection (YOLOv8)
- Loitering detection (YOLOv8)

Tech Stack:
- Frontend: Vue 3 + Vite + Element Plus
- Backend: FastAPI + WebSocket
- Monorepo: pnpm workspace + Turbo
- Docker support included

apps/server/requirements.txt

@@ -0,0 +1,12 @@
+fastapi>=0.104.0
+uvicorn[standard]>=0.24.0
+python-multipart>=0.0.6
+pydantic>=2.0.0
+python-dotenv>=1.0.0
+aiofiles>=23.2.0
+opencv-python>=4.8.0
+pillow>=10.0.0
+ultralytics>=8.0.0
+numpy>=1.24.0
+torch>=2.0.0
+websockets>=12.0.0