This project exposes following apis: A. Authentication Server (running at https://localhost:6000)

1. signup api: This is to create a new user with username and password
2. login api: This is to login with created user and returns JWT token as well as refresh token
3. token api: This is used for creating a new token after the actual token expires using the refresh token.
4. logout api: To end the validity of token. B. Application server (running at https://localhost:3000)
5. posts api: This is for fetching all the posts saved for the current user

NOTE: // This will genarate hexadecimal value that will be used as a token secret later on to generate JWT node require ('crypto').randomBytes(16).toString('hex') // crypto is a library to generate rendom bytes // here 16 is the length of byte that we want, we can also use 64 etc