Implement Token Based Authentication

[Jennak21]

Changes made:

• In the frontend:

  • useGet and usePost hooks were modified to request a token from auth0 to send with requests to our api

• In the backend:

  • middleware was added to validate this token. Upon validation the userId is added to the request body
  • Get /roadtrip/ endpoint was modified so that only roadtrips for a user are returned
  • Tests were modified as the middleware needs to be mocked

Risks: See PR comment on line 38 for roadtrips.test.js

Note to reviewers: Please update .env files in both backend and frontend to include:

// .env files
REACT_APP_AUTH0_AUDIENCE=http://localhost:3001/api/

This has also been updated in https://docs.google.com/document/d/1vTRJ4zICgASs43tYQk3sYF7GSNeYUqVuc3ZNedivg0k/edit

Closes #29