Function to export test reference year data for modelica usage

The weather data handling needs a complete rework and adaption to be flexible regarding different sources for the data.

AiXWeather From research the AixWeather-Tool from RWTH is available: https://github.com/RWTH-EBC/AixWeather

Limitations:

• hard versions, e.g. the installation for Mac with Python 3.13 didn't work
• core structure based on a pandas data frame, not user friendly in bigger python based projects

Current Conclusion from Max:

• implement an own weather data structure based on a dataclass for streamlined handling of weather data within Python - refactoring and extension of current TRY implementation
• include functions to load data from historical and TRY data
• export to common formats like TMY3 readable .mos
• API Functionality to retrieve weather data is maybe easy adapt from AixWeather

Implement a function, which writes the weather data to usable Modelica format