Changed all string.Join by the new Extension Method Join()

VectoCommon/VectoCommon/Models/HybridStrategyResponse.cs

VectoCommon/VectoCommon/Models/IResponse.cs

VectoCommon/VectoCommon/Models/WHRType.cs

VectoCommon/VectoCommon/Utils/Validation.cs

.../VectoCore/InputData/FileIO/XML/Common/AbstractXMLType.cs

...laration/DataProvider/XMLDeclarationEngineDataProvider.cs

...ore/InputData/Reader/ComponentData/ActuationsMapReader.cs

...toCore/InputData/Reader/ComponentData/AlternatorReader.cs

...a/Reader/ComponentData/BatteryInternalResistanceReader.cs

...InputData/Reader/ComponentData/BatteryMaxCurrentReader.cs

...toCore/InputData/Reader/ComponentData/BatterySOCReader.cs

...ore/InputData/Reader/ComponentData/CompressorMapReader.cs

.../InputData/Reader/ComponentData/DrivingCycleDataReader.cs

.../InputData/Reader/ComponentData/ElectricConsumerReader.cs

.../InputData/Reader/ComponentData/ElectricMotorMapReader.cs

.../Reader/ComponentData/EnvironmentalContidionsMapReader.cs

...ore/InputData/Reader/ComponentData/FullLoadCurveReader.cs

...re/InputData/Reader/ComponentData/PTOIdleLossMapReader.cs

...e/InputData/Reader/ComponentData/RetarderLossMapReader.cs

...e/InputData/Reader/ComponentData/SSMTechnologiesReader.cs