PublicAPI: Create Skeleton

[jackjohn7]

Create API using some sort of node web framework for the sake of being congruent with the rest of the project. This API will be public facing. Include some sort of check to ensure that one client isn't overloading the server with requests to avoid some sort of DOS attack.

Probably leaning toward fastify. Fastify is supposedly faster than Express, and I don't think our public API needs the things Express could potentially offer.