Add Wights & Biases Logging and Saving of Generated Audio?

[morganmcg1]

Hey! Morgan from Weights & Biases here, just checking if you'd be open to a W&B integration in the train and generation scripts? We could add metric logging, model checkpoints as well as generated audio samples so that users' work gets saved in a central place for later.

Happy to chat more if you have any questions.

[ModeratePrawn]

This would be handy for sharing experiments and results with one another.