support upload/download model to/from hubble about annlite HOT 1 OPEN

def save_model(self, name: Union[str, PathLike]):
    if isinstance(name, str):
        # save to hubble with the given name `name`
    else:
        # save to local path
    

index = Annlite(...)

index.train(...)

# upload the model parameters 
index.save_model('pca128_pq64')

# load the model  parameters 
index = Annlite(..., model_path='pca128_pq64')
index.index(...)
index.search(...)