feat: framework - using a cmd library/framework to handle app execution

[gardlt]

As developers, i want use libraries like cliff, click, ect. This will allow for a standardization of how to create future command and will help improve flag handling.

[alanmeadows]

Although this is likely a separate feature from this, this feature should also factor into the need to have there be a REST API portion (with auth) of armada, to allow it to be used in complex workflows that don't have the ability to run it locally.

In a python sense, something very similar to openstack practices of CLI calling API. Also very similar to helm itself except would not suggest another layer of gRPC, but a simple REST framework. I would keep an eye on what is being done for github.com/att-comdev/drydock as it is leveraging this same model for MaaS using pecan complete with plugins and auth.

[gardlt]

Correct when adding this feature we will need to follow something similar to the openstack cli practices or fuels. in order to utilize the armada lib not just as a cli tool, but a library, that just so happens to have a CLI. good add @alanmeadows.

[gardlt]

done in #52