Convert Paddle language models to onnx

[Farooq87]

Please help me to convert 3 language models from Paddle OCR - German, Dutch and Sweden to onnx.
I am a complete incompetent in this and can't figure out how to use it.
I need onnx files to add in Luna Translator program (language packages)

There must be 3 files in each converted package

[Zheng-Bicheng]

@GreatV

[GreatV]

@Farooq87 pelease refer to https://paddlepaddle.github.io/PaddleOCR/latest/en/ppocr/infer_deploy/paddle2onnx.html