Goal: 

• Refactor api handlers so that unit tests can be created for them.

Acceptance Criteria:

• I can instantiate a specific api handler without all the routing.
• I can instantiate a specific api handler without a database.
• I can mock the dependencies by injecting them (interactor, repository and presenter components) from the unit test.

Additional notes:

• The current sqlmock helper will help to avoid to inject the database, but that component won't be used as the repository should be possible to mock.
• The refactor above will allow to unit test the handler/ components without run an echo instance.

Related: HMSIDM-218