Update gradio
Support longer midi input

Huggingface integration.

Important Update: Add kv cache to speed up generation.

The old versions will not work because the ONNX model on Hugging Face has been updated.

Add the selector for the other models in onnx app.

Add batching generation.

MIDITokenizerV2 and new MidiVisualizer

Optimise the tokenizer, dataset and app.

update app midi visualizer

app packaging