hmm ok, what do you think about the following idea?
I create a folder samples inside the graphics project.
There is a main function from where I can call the samples which I am creating.
For example creating a Triangle, creating a triangle with shader, creating a mesh, ans so on.
Finally with these main function, I make the graphics project as Startup Project.
edit: hmm, I have noticed now, that this is not possible, because this is a library project.
edit 2: ok, now I have another idea, to create this in the pyrogenesis project.
So I append this project for command argument --sample in Debugging.
And in the main function then I check for this argument.