adding testcase with ESS and bus aux

VectoCore/VectoCoreTest/TestData/Hybrids/BusAuxEngineeringMode/InterurbanBus_ENG_BusAux_A_ESS.vecto

+{
+  "Header": {
+    "CreatedBy": "",
+    "Date": "2021-03-12T08:15:56.2993613Z",
+    "AppVersion": "3",
+    "FileVersion": 5
+  },
+  "Body": {
+    "SavedInDeclMode": false,
+    "EngineOnlyMode": false,
+    "VehicleFile": "InterurbanBus.vveh",
+    "EngineFile": "Engine_250kW_7.7l.veng",
+    "GearboxFile": "MT_6_Bus.vgbx",
+    "TCU": "MT_6_Bus.vgbx",
+    "ShiftStrategy": "",
+    "BusAux": "BusAuxData_A.vaux",
+    "Padd": 5000.0,
+    "Paux_ICEOff_Driving": 2800.0,
+    "Paux_ICEOff_Standstill": 1500.0,
+    "VACC": "Driver.vacc",
+    "EngineStopStartAtVehicleStopThreshold": 2.0,
+    "EngineStopStartMaxOffTimespan": 120.0,
+    "EngineStopStartUtilityFactor": 0.8,
+    "EcoRollMinSpeed": 60.000000000000007,
+    "EcoRollActivationDelay": 2.0,
+    "EcoRollUnderspeedThreshold": 0.0,
+    "EcoRollMaxAcceleration": 0.1,
+    "PCCEnableSpeed": 80.0,
+    "PCCMinSpeed": 50.0,
+    "PCCUnderspeed": 8.0,
+    "PCCOverSpeed": 5.0,
+    "PCCPreviewDistanceUC1": 1500.0,
+    "PCCPreviewDistanceUC2": 1000.0,
+    "LAC": {
+      "Enabled": true,
+      "PreviewDistanceFactor": 10.0,
+      "DF_offset": 2.5,
+      "DF_scaling": 1.5,
+      "DF_targetSpeedLookup": "",
+      "Df_velocityDropLookup": "",
+      "MinSpeed": 50.0
+    },
+    "OverSpeedEcoRoll": {
+      "Mode": "Off",
+      "MinSpeed": 50.0,
+      "OverSpeed": 5.0
+    },
+    "Cycles": [
+      "Interurban",
+      "Coach",
+      "Urban",
+      "Suburban",
+      "HeavyUrban"
+    ]
+  }
+}
\ No newline at end of file

VectoCore/VectoCoreTest/TestData/Hybrids/BusAuxEngineeringMode/InterurbanBus_ESS.vveh

+{
+  "Header": {
+    "CreatedBy": "",
+    "Date": "2021-03-12T08:16:49.9931966Z",
+    "AppVersion": "3",
+    "FileVersion": 8
+  },
+  "Body": {
+    "SavedInDeclMode": false,
+    "VehCat": "CityBus",
+    "LegislativeClass": "Unknown",
+    "CurbWeight": 14800.0,
+    "CurbWeightExtra": 0.0,
+    "MassMax": 25.0,
+    "Loading": 5170.0,
+    "rdyn": 507.0,
+    "CdCorrMode": "CdofVdecl",
+    "CdCorrFile": "",
+    "AxleConfig": {
+      "Type": "6x2",
+      "Axles": [
+        {
+          "Inertia": 15.5,
+          "Wheels": "295/80 R22.5",
+          "AxleWeightShare": 0.2725,
+          "TwinTyres": false,
+          "RRCISO": 0.0065,
+          "FzISO": 31270.0,
+          "Type": "VehicleNonDriven"
+        },
+        {
+          "Inertia": 15.5,
+          "Wheels": "295/80 R22.5",
+          "AxleWeightShare": 0.455,
+          "TwinTyres": true,
+          "RRCISO": 0.0065,
+          "FzISO": 31270.0,
+          "Type": "VehicleDriven"
+        },
+        {
+          "Inertia": 15.5,
+          "Wheels": "295/80 R22.5",
+          "AxleWeightShare": 0.2725,
+          "TwinTyres": false,
+          "RRCISO": 0.0065,
+          "FzISO": 31270.0,
+          "Type": "VehicleNonDriven"
+        }
+      ]
+    },
+    "EngineStopStart": true,
+    "EcoRoll": "WithEngineStop",
+    "PredictiveCruiseControl": "None",
+    "ATEcoRollReleaseLockupClutch": false,
+    "CdA": 4.115,
+    "VehicleHeight": 0.0,
+    "IdlingSpeed": 0.0,
+    "Retarder": {
+      "Type": "secondary",
+      "Ratio": 1.0,
+      "File": "Default.vrlm"
+    },
+    "Angledrive": {
+      "Type": "None",
+      "Ratio": 0.0,
+      "LossMap": ""
+    },
+    "PTO": {
+      "Type": "None",
+      "LossMap": "",
+      "Cycle": ""
+    },
+    "TorqueLimits": {}
+  }
+}
\ No newline at end of file