Make advanced tutorials for new docs

[fwitte]

Similar to #1141 we need at least 2 advanced tutorials for the new docs. We still have to discuss what these will be about. To be initialized after finalizing #1141

[p-snft]

Named tuples as labels and managing more complex energy systems might be something for advanced usage.

Is saving/ loading the energy system (including results) something advanced? I think, we should have that in the tutorials but not in every single of the beginner ones.