Need Swagger API documentation

[rofrano]

As a User
I need the API documented in Swagger
So that I can easily understand how to use the API

Assumptions:

• We can leverage the Swagger support for Python
• We can annotate the code to support Swagger documentation generation
• The documentation endpoint is on the /api-docs URL
• Story Develop a REST API to create a counter service #1 is completed

Acceptance Criteria:

When I follow the /api-docs URL
It should return the documentation JSON in Swagger format