PaddleOCR 3.7 adds ONNX Runtime backend and PP-OCRv6 models

PaddleOCR 3.7 adds an ONNX Runtime inference backend, switchable with a single parameter and no code changes. The release supports CPU via OpenVINO and GPU via CUDA and TensorRT, and introduces PP-OCRv6 Tiny, Small, and Medium models that run up to 3.9× faster on CPU.