Add default path to pyannote model with fallback option.

[mahenning]

Checks if it can load from jaikinator hf repo. If not, fall back to normal default options.

[JSchmie]

Maybe clean up the function a bit more.

[JSchmie]

Can you please add a minimal code example for the HFApi and how you parse a tuple there?

[mahenning]

Diariser.load_model() -> pyannote model from jaikinator/scraibe, if that repo is not available, try to set/load a HF token and load from pyannote/speaker-diarization-3.1. (Technically, try first to load a yaml file from ~/.cache/torch/pyannote, but this is mostly irrelevant.)
Diariser.load_model('path/to/yaml.yaml') -> try to load a yaml file locally, if it is not found, throw error.
Diariser.load_model('hfrepo/model) -> interprets every string as a os path, if it's not existing, throw error.