Otherbrain HF open data integration

[psugihara]

Otherbrain is a free human feedback dataset for open models.

Here's a link with more info: https://www.otherbrain.world/human-feedback

Would ya'll be interested in adding 👍👎 to catai to help build the open data set? Happy to help if so.

For reference, here's what the flow looks like in FreeChat. I think we could do something similar in catai: