adding testcases for B2 with APT-N transmission

...reTest/Integration/BatteryElectric/BatteryElectricTest.cs

...Core/VectoCoreTest/Integration/Hybrid/SerialHybridTest.cs

...ta/BatteryElectric/GenericVehicleB2_APTN/3speedAPT-N.vgbx

...ta/BatteryElectric/GenericVehicleB2_APTN/Axle_4x2_LH.vtlm

...ctric/GenericVehicleB2_APTN/BEV_B2_Group5LH_rl_APTN.vecto

...ryElectric/GenericVehicleB2_APTN/BEV_B2_Group5_LH_rl.vveh

...a/BatteryElectric/GenericVehicleB2_APTN/BEV_Group5_EM.vem

...eryElectric/GenericVehicleB2_APTN/BEV_Group5_REESS.vreess

...estData/BatteryElectric/GenericVehicleB2_APTN/EM_Map.vemo

...stData/BatteryElectric/GenericVehicleB2_APTN/EM_drag.vemd

...estData/BatteryElectric/GenericVehicleB2_APTN/EM_fld.vemp

.../BatteryElectric/GenericVehicleB2_APTN/Gear_indirect.vtlm

...ctric/GenericVehicleB2_APTN/GenericBattery_PEV_800V.vbatr

...ctric/GenericVehicleB2_APTN/GenericBattery_PEV_800V.vbatv

...eryElectric/GenericVehicleB2_APTN/Hybrid_Parameters.vhctl

...ta/BatteryElectric/GenericVehicleB2_APTN/MaxCurrent.vimax

...a/BatteryElectric/GenericVehicleB2_APTN/NoCompressor.ACMP

...tteryElectric/GenericVehicleB2_APTN/REESS_SOC_curve.vbatv

...atteryElectric/GenericVehicleB2_APTN/ShiftParameters.vtcu

...TestData/BatteryElectric/GenericVehicleB2_APTN/Truck.vacc