[devEx] Look into using argparse mutual-exclusion for --hub-name || --login scenarios

- We should look into argparse mutual exclusion, to lean on argparse to improve usage/description devEx for `--hub-name` or `--login` usage.
- https://docs.python.org/3/library/argparse.html#mutual-exclusion
- We need to see if there is any support for this in CLI core or Knack
- If not, and if evaluation is deemed useful - consider building it out and integrating or informing the CLI core team on the need

Start with the argparse mutual-exclusion documentation linked in the issue, then inspect how --hub-name and --login are defined in the CLI extension. Check whether CLI core or Knack supports this behavior. Done means documenting the evaluation and, if useful, proposing an integration or informing the CLI core team.

Written by the indexing model from the issue text.