Add apigen.net

[marcosanz-apiquality]

Display name: apigen.net
Description: Archetype generator created in .net to generate microservices using openapi. It can create end to end using database mapping resources into the openapi specification. Support .net 7.

Repository:
Homepage: https://github.com/apiaddicts/apigen.net/
OpenAPI Versions
3.1: false
3.0: true
2.0: true