Azure download_model from HuggingFace with Username and Password parameters

### Describe your suggestion

requesting to update run_model_download.py notebook to include username and password fields so we can complete the import_model_into_registry.ipynb

e.g....

parser.add_argument("--Username", required=True, help="Username for authentication")
parser.add_argument("--Password", required=True, help="Password for authentication")

### Additional details

_No response_

Open the run_model_download.py notebook and compare its current inputs with the usage in import_model_into_registry.ipynb. Trace how the model download is invoked for HuggingFace on Azure, then verify that the registry import can complete when the requested username and password fields are supplied.

Written by the indexing model from the issue text.