FEAT add support for local model checkpoints in HF target

[romanlutz]

Is your feature request related to a problem? Please describe.

Our HF target can download and run models from HuggingFace. However, if you have a model checkpoint locally in HF format, you can't load it (yet!).

Describe the solution you'd like

Instead of providing a model name we should perhaps also have the option of providing a model directory instead and just load it from there.

CC @KutalVolkan [just FYI since you created the original target]

[KutalVolkan]

Hello Roman,

I will take care of it :)

[rlundeen2]

This is good, I think we can close it!