rf-detr-medium-plate: RF-DETR Medium fine-tuned for licence plates, with its export script and measurements

README and export script for the face export

rf-detr-medium-face.onnx: RF-DETR Medium fine-tuned for faces, 576x576 fp32

RF-DETR Large 2026 and Seg Large, exported from Roboflow's checkpoints

initial commit