Add Generate UserSystem Command

                        
|Q            |A       |
|---          |---     |
|Bug Fix?     |n       |
|New Feature? |y       |
|BC Breaks?   |n       |
|Deprecations?|n       |
|Tests Pass?  |not sure|
|Fixed Tickets|GH-1    |
|License      |MIT     |
|Doc PR       |        |