visual-cortex-ocr-onnx 0.1.0

PaddleOCR detection+recognition via ONNX Runtime for visual-cortex, with pinned, checksummed model download.
Documentation
visual-cortex-ocr-onnx-0.1.0 has been yanked.

PaddleOCR (detection + recognition) via ONNX Runtime, implementing visual-cortex-vision's OcrEngine. Heavy dependencies are isolated here.