Update header stylings

Update stylings margin bottom

Upd FastAPI backend img processing garbage det and cls + frontend JS side rendering

Update Dockerfile to load garb cls model in build-time

Upd animal btn style

Upd animal btn style

Add YOLOv8n to detect animal and 2 Roboflow models to be specifically finetuned on bird and fish. Rm HTML_CONTENT to be rendered on statics dir