refactoring matching of driving cycle when registering component in modal data, adding missing fields in testcases

refactorings: register components with sum-data as well (same as mod data), move sum-data fields to a separate class

implementing separate method in powertain builder for IEPCs, implement single-speed gearbox for IEPCs with only one gear, adding testcases for single-speed IEPCs

adding testcases for IEPC variants, adding implementation for IEPC wit included transmission - works

RetarderTest: Added additional test for creation of different retarder types and powertrainPositions

moving drag curve per voltage level to single drag curve for EM. updating GUI, input data provider, data apapter, etc.

update electric motor form to use two voltage levels, adapt input data, json reader, json writer for electric motor, adapt testcases to make it compile

adding testcases for EM-Loss-map