Create a Command Data type

[steve-r-west]

We need to support "Commands" in the project, (e.g., create, get, docs, ...). We need a data type for this. It might be a struct or an interface.

Each command will need to have:

1. A "keyword" (e.g., create, get, docs).
2. A "description" for a help screen
3. A func that takes the passed in arguments and executes.