Allow for local path specification of HF models/repos

[JarodMica]

Makes local_path more robust by downloading the models to path specified instead of needing to have the files already.

[JarodMica]

Also added JA model to SHARED.md not related to PR

[SWivid]

@JarodMica Thanks~
The logic of using is_local is to avoid failure with connection to hf, while snap_shot will still try confirming hf once (will modify this after merge)

Thanks again for JA model sharing!
Looking forward to a final version