feat: implement support for wandb, fixed seed for unconditional train…

[aaronabebe]

• adds wandb logging for all relevant training parameters
• logs generated audio files to wandb after each step (could maybe be a lot, i just went with the defaults they implemented -> but we can reduce that in the future)
• after each step logs unconditional generated audio with a fixed seed

[aaronabebe]

@hugofloresgarcia sorry ignore that PR. opened it on the wrong repository!