Add button to make tutorials runable on colab

[rdnfn]

Jupyterbook supports adding buttons to launch notebooks in jupyter colab. I tried this before but failed to enable this in the Feedback Forensics docs, however this would be very powerful to have - reducing the friction to get started.

E.g. like here:
From https://jupyterbook.org/en/stable/content/execute.html

[timokau]

That would be cool! Limited because there wouldn't be any real datasets available, though.

[rdnfn]

Thanks! For the model comparisons tutorial (https://docs.feedbackforensics.com/en/latest/guide/models.html) we do have the generations dataset that is public and is already being directly loaded from HF.

[timokau]

Ah right, would be nice if that works in colab :)