* Installs @vercel/postgres

* Installs @simplewebauthn/server

* Installs @simplewebauthn/browser

* Git-ignores all files starting with .env

* Reorganises folders in API

* Defines User type

* Defines Subscription type

* Defines Authenticator type

* Sets up table definition file

* Can get user from database

* Can add user to database

* Can get user's current challenge

* Can set user's current challenge

* Can get user's authenticators from database

* Can get authenticator by ID from database

* Can add user authenticator to database

* Can update authenticator in database

* Defines Relying Party information

* Can generate registration options

* Can verify registration response

* Defines registration API endpoint

* Defines user API endpoint

* Reorganises API functions on frontend

* Can access authentication API functions on frontend

* Can generate authentication options

* Can verify authentication response

* Documents the registration flow

* Fix dev_csso

* Form styling

* WIP adds sign up page