Test core scripts

[dfulu]

Currently our tests do not cover some of the core functionality of this library. We care if these scripts break but we don't currently test for it

We should test

• The backtest scripts
• The save checkpoint to huggingface script
  • Though the main method used in this script is tested already
• Also the main train() function which is wrapped in the run.py script
  • Previously I had thought that the wandb logger might block testing the train() function, but I think it should work by setting the offline=True in the wandb logger

[mrgear111]

@dfulu Can i work on this?

[dfulu]

@mrgear111 no sorry, this is an OCF internal issue, and so hasn't been marked with "contributions-welcome"

[dfulu]

We decided that these scripts were not crucial and do not need to be tested