Enhancement: Extend the spo sitedesign get to retrieve site design info using name option #1884

The command currently lists site design based on the id which is a GUID passed , extend this command to be more human friendly and have an option to pass title of the site design to retrieve information.

Extend command this to pass title as well, passing either id or name but not both.
If we find multiple items matching the name, return an error with the list of matching items and their ids to disambiguate.