Add functionality to download select models from hugginface directly

[danemadsen]

Add functionality to download select models from hugginface directly

[Phoenix1025]

Yes that would be great.

[bradflaugher]

I think this would be huge. I'd just copy the functionality of LM Playground, which works well out of the box with a few select models https://play.google.com/store/apps/details?id=com.druk.lmplayground

This will also remove the need for a beginners guide and advanced docs as mentioned in these issues:

• #562
• #578