Add command-line interface

[RaasAhsan]

to start with:

• version
• help

[JosephMoniz]

Theres a lot of really good options we have available. I've had success with argparse in the pass and it's pretty magical stuff. I really want to use click though. It's super clean, very similar to Flask and doesn't require us writing a bunch of wiring like we'd have to artisanally design if we used argparse

[RaasAhsan]

click is also a requirement via pip-tools and flask already