Migrate new app templates to their own repos

[rglover]

Right now I have a janky template built-in to the CLI but it'd be good to offload these to their own repos to make changes easier.

For 1.0, I'd like to at least have:

• [ ] Barebones (stripped down app w/ no styling, just raw rendering).
• [ ] Arc Boilerplate (similar to what we have now w/ Mod free installed).
• [ ] ArcX Boilerplate (Arc w/ Mod Plus and extra features built in).

That way you could quickly start a new SaaS app with or without UI stuff