Documentation for the APIs about registry

[milancurcic]

FastAPI has built-in support for automatic API docs generation using Swagger UI. There's a Swagger UI blueprint for Flask: https://github.com/sveint/flask-swagger-ui. Using this requires first generating the openapi.json schema file from the Flask server. There seem to be quite a few solutions out there, but an obvious choice is less clear. Perhaps this: https://github.com/marshmallow-code/apispec.

I can't recommend this enough for API development and documentation. I use it to make all my test requests during prototyping. Example: https://petstore.swagger.io/#/

[arteevraina]

Thank you @milancurcic for your suggestions.
We have written the API documentation here using swagger.