Relationships between tables (Query and Mutation) in TypeORM

Steps to run this project:

1. Run npm i command
2. Create ormconfig.json file and sutup a database creadentials for PostgreSQL. Visit https://typeorm.io/#/ to see ormconfig.json example
3. Setup database settings inside ormconfig.json file
4. Run npm start command
5. To run query and mutation visit localhost:4000