better si units (operators, easier generic typing)

...e/Models/SimulationComponent/Data/CombustionEngineData.cs

...oCore/Models/SimulationComponent/Data/DrivingCycleData.cs

...els/SimulationComponent/Data/Engine/FuelConsumptionMap.cs

...e/Models/SimulationComponent/Data/Engine/FullLoadCurve.cs

...oCore/Models/SimulationComponent/Impl/CombustionEngine.cs

...re/Models/SimulationComponent/Impl/EngineOnlyAuxiliary.cs

.../Models/SimulationComponent/Impl/TimeBasedDrivingCycle.cs

VectoCore/Utils/DoubleExtensionMethods.cs

VectoCore/Utils/Formulas.cs

VectoCore/Utils/SI.cs

VectoCoreTest/Models/Simulation/DrivingCycleTests.cs

.../Models/SimulationComponentData/FuelConsumptionMapTest.cs

VectoCoreTest/Utils/SITest.cs