refactor

[wilrnh]

1. restructure to https://dev.to/vadorequest/a-2021-guide-about-structuring-your-next-js-project-in-a-flexible-and-efficient-way-472
   2. at least get a src and components folder
2. testing jest + react testing library
3. break the card into pages
4. also probably rethink accordion structure
5. requirements for shared state
6. move header/footer into _app.js