How to integrate with AspNetCore minimal API projects

Let's say, I created a web application project using the new [minimal API](https://learn.microsoft.com/en-us/aspnet/core/fundamentals/minimal-apis?view=aspnetcore-7.0) and now want to use this library, to add some commandline features to configure its startup. How would I do that?

Maybe this could need some more documentation. A code sample would be helpful. Or is this currently not supported and one should switch back to having a `Startup` class and initialize it like [here](https://github.com/dotnet/command-line-api/blob/main/samples/HostingPlayground/Program.cs)? But also then, a sample would be helpful, how it can be integrated with the AspNetCore webhost stuff.