Add support for loading models from google drive

[gregbugaj]

Add support for loading models from google drive in the ModelRegistry

Possible syntax.

    ModelRegistry.register_provider("gdrive")

    _name_or_path = "rms/layoutlmv3-large-corr-ner"
    kwargs = {
                      "provider":"gdrive",
                       "__model_path__": __model_path__
    }
    _name_or_path = ModelRegistry.get_local_path(_name_or_path, **kwargs)