Reorganize Examples Collection to be easier to maintain and invokable from Xamarin App

[tthiery]

[tthiery]

@Berdsen I changed some code recently of the example code base ... is that more to your liking or what can we do to improve the situation there?

[Berdsen]

@tthiery That looks a bit tricky to bring the examples into two different solutions. Perhaps we could:

• exclude the test solution in an own repository
• include it in powered-up and example-xamarin repos as a git submodule
• extract an interface out of the BaseExample class
• and have then the own implementations in separate folders or solutions

Might be a good solution for having just one example code base

[tthiery]

I will factor the base application into the Program.cs (basically removing this OO 💩). If you like, I just create another .dll without any host code, hosting exclusively the examples.

Would that help?