Carpool server

This is a basic implementation to create cars and journeys, and assign them a car.

It is a showcase/demo of:

Typescript with JS linter.
Dependecy injection (Inversion of Control, from SOLID) with Typedi. It helps in testing clases by making it easier to mock Repositories and dependencies.
Routing controller classes with routing-controllers
Domain Driven Design (sort of) by separating Infrastructure (API), App (Use Cases) and Domain (Entities) layers. The goal is to avoid spaguetti code that mix implementations (route controller, databases, email notifiers, etc) with business logic (entities, business rules, etc)

How to run

yarn install
Start server with yarn start, with hot-reload (yarn prod for compiled Javscript)
You can create cars at PUT /cars (see src/api/README.md for body format)
You can create journeys (and see what car is assigned) at POST /journeys (see src/api/README.md for body format).

Move DB out from Repository to Infrastructure layer.
Create Mappers for each module to convert from/to Domain, DTO, Persistence.
Make Use Cases return Result type, instead of Promises. This would unify handling errors and type of results.
Tests by mocking dependencies, instead of using tools like Sinon to stub/mock them.
Implement GET /status, and Dropoff business logic.