npm i - to install dependencies \
npm run start:dev - run development mode \
npm run start:build - run prod mode \
server loaded on http://localhost:3000
GET: /api/users - get all users
GET: /api/users/userid - get by id
POST: /api/users - create user
PUT: /api/users/userid update user
DELETE: /api/users/userid delete user { "username" : "Username", "age" : 22, "hobbies": ["hobby", "hobby"] }