feat(oauth2/db): reworked oauth2 database footprint

- Removed `auth` table and merged its information inside the `user`
  table
- Changed around some field names in the database
- Changed Create*User functions to not be using overload but different
  functions

src/user/src/routes/info.ts

@@ -46,7 +46,7 @@ const route: FastifyPluginAsync = async (fastify, _opts): Promise<void> => {
 
 
 			const payload = {
-				name: user.display_name,
+				name: user.name,
 				id: user.id,
 				// the !! converts a value from <something> to either `true` or `false`
 				// it uses the same convention from using <something> in a if, meaning that