Setup the basic architecture of the backend

[fhilgers]

This is work in progress for brainstorming the backend half of the architecture collaboratively with the team.

Proper architecture documentation will follow and be added to #3 for review by the team to decide if this architecture is appropriate.

Todos:

• [ ] Error handling instead of calling unwrap() on everything
• [ ] API Documentation
• [ ] Architecture Documenation
• [ ] Reuse License compliance