Initial version of website

closes #66 (closed)

Implements a Next.js website that pulls content from Netlify CMS. The CMS is statically hosted at http://localhost:3000/admin

File format

We currently use a mixture of JSON and markdown files to render content. I see us going down a pure JSON route however have left in the home.md file as a proof of concept.

Auth

Netlify CMS works based on git and therefore needs auth to be able to create the MRs. This MR does not implement that, and Netlify is simply in a local/test repo setup. Running rushx cms while inside the website directory will give you a basic local server to test how the CMS works and update the local markdown files.