TODO List API rest-api-assignment b2boost

Date : 23-24 nov 2021

1. The endpoint will return custom error JSON messages in the payload, additionally to the standard HTTP response codes similar to this one:
```
{
 "code": 404,
 "message": "Partner with id 1 not found!"
}
```
2. The application will be cleanly layered, by separating control and business logic. For instance, the controller of the endpoint will not contain any business logic, and will limit itself to
- marshalling data from the http layer to the service layer
- reporting error conditions in the response
- marshalling results back to the http layer, including custom errors
3. The service layer will be transactional and encapsulate all validation and database interactions
4. The data layer will be implemented by using a data repository service
5. The application can run with an embedded in-memory database
6. The application will have a health check endpoint
7. The application will have suitable functional tests, checking real http functionality
8. No authentication/security necessary
This document will contain the specification of the REST endpoint, with data definition and error payload specification.

You should document how to

Run the test suite
Run application
Optionally, a commentary on how you would deploy it (not necessary to implement this)