Compulsory Task $2$

Create an Express app by following the steps in the 'IMPLEMENTATION OF JWT$\text{'}$ section. It should have the following endpoints:

$-/$login $-$ checks a POSTed username and password and produces a JWT$.$

$-/$resource $-$ checks the JWT in the auth header and displays a message with the username.

$-/$admin$\_$resource $-$ checks the JWT and displays a message if the token is verified and the token holder is an admin.