What's the specific question here, is it, "how do you add projects to other solutions"? Are you asking about the templates?

I often get a question...

I have multiple solutions (backend solution and a frontend solution) or in different repos. How would I add on of the projects from another solution or repo into my app host to have it startup too.

Answers... I assume you can just reference the project location? I told folks add a submodule...

Let's verify with @davidfowl - as I'm not sure we have an answer yet. I think this was something that they plan to support in the future, but for now...not sure.

For sure! Even if it is like hey... create a new solution with all of your projects and leverage project filters or something... idk