Add API Insights

[JustSteveKing]

We recently released API Insights as a free tool to give you insights into your API using your OpenAPI Specification. This is a free web application, as well as a native mac application. The idea is that it will act like a static analysis tool for your API using your OpenAPI specification as the point of reference.

Website: https://apiinsights.io/
App Store: https://apps.apple.com/hr/app/api-insights-by-treblle/id6468354004?mt=12