perf(onnx): optimized threading for multi-worker environments

feat: implement initial face recognition service with API endpoints for registration, attendance, and anti-spoofing capabilities.

feat: Initialize face recognition service with FastAPI, MongoDB, Haar Cascade, ArcFace ONNX, and dynamic configuration sync.

feat: upgrade face recognition with anti-spoofing and lighting checks

Add root endpoint to resolve 404s

Initial commit - face recognition service