Download onnxruntime-training-android JAR file with all dependencies

The onnxruntime-training android package is designed to efficiently train and infer a wide range of ONNX models on edge devices, such as mobile phones, tablets, and other portable devices with a focus on minimizing resource usage and maximizing accuracy.See https://github.com/microsoft/onnxruntime-training-examples/tree/master/on_device_training for more details.