Adding an epic documentation generator tool

[asfand-dev]

This tool was there in the open-source world for a while now but it didn't get a lot of attention, now that Europe's largest cloud provider IONOS Cloud used it for converting its OpenAPI specification into a documentation website https://api.ionos.com/docs/ it proved its creativity and quality.

[daveshanley]

The project looks abandoned, has low/no traffic and the example used has since moved to ReDocly.