Suggestion: Distinct access to thermal models

[ckittl]

As of now, thermal models can only be accessed via electrical models, that do have a reference to those. However, a ThermalBus or a ThermalStorage e.g. could connect several thermal models (and thereby electrical ones as well). From my point of view it is an in-homogeneity with regard to electrical models.

I would suggest two options:
Option 1

• Have a set of ThermalBusInput in RawGridElements
• Have a set of CylindricalStorageInput, ThermalHouseInput in SystemParticipants

Option 2
Create a new ThermalContainer and assign it to a GridContainer