Initialize repository

Summary:
rSP @ DevCentral

Released under MIT license

This is a monorepo with 3 components:

• backend/ - Node.js REST API
• frontend/ - Vue.js Foundation client
• database/ - PostgreSQL schemas

Test Plan: arc which + arc lint

Reviewers: dereckson

Reviewed By: dereckson

Differential Revision: https://devcentral.nasqueron.org/D3097