feat: use the bigger 7B param model by default

[kyteinsky]

resolves #76

[kyteinsky]

needs testing and admin docs update

[marcelklehr]

Shall we do a major version bump for this change to make sure people realize that the default model might not fit on their GPU anymore?

[marcelklehr]

ping?

[kyteinsky]

ah sorry, missed this. The bigger model did not have much improvement in quality as I hoped for, maybe the examples were not good given my own language limitations :)
also, it sometimes goes generating on and on, and exhausts my GPU's 16G VRAM even when the input is not that big. The same thing happened when \n was there in the input, we sanitise the output for that, maybe there are more things offending it, or maybe the input was large but I doubt that, it was just one paragraph from wikipedia.
if the input was large, we might need chunking before we merge this.

[marcelklehr]

damn, ok.

[marcelklehr]

The bigger model did not have much improvement in quality