practice project with Nest.js implementing Planning Poker
lib = business logic, pure function
service = application interface, interact with database but no UI (HTTP)
api = ui layer, in this case HTTP Api server
database = database and ORM
$ npm install# development
$ npm run start
# watch mode
$ npm run start:dev
# production mode
$ npm run start:prod# unit tests
$ npm run test
# test coverage
$ npm run test:cov