Create example on how to upload users to a group from a list.

[eric-lyons]

There is the admin powerpack extension, but some customers want to create their own workflows to add users or upload users to certain groups based on a csv. This is a very simple example that uploads a list of users to a specific Looker group from a csv of email. They can modify this to add them to a schedule or even combine it with the create users example to add users based on uploads of csvs.