graphics/py-rapidocr: Add New Port

RapidOCR provides the text detection and recognition models of PaddleOCR
converted to ONNX, so they can be run without the PaddlePaddle framework.
Detection locates the text boxes in an image, recognition reads the text
inside them.

cv2 comes from graphics/opencv rather than from the headless wheel, which
conflicts with it and with misc/py-insightface.

WWW: https://github.com/RapidAI/RapidOCR

Sponsored by: Netzkommune GmbH