added citybus vehicle with AT Gearbox

Generic Vehicles/Engineering Mode/CityBus_AT/175kW.vfld

Generic Vehicles/Engineering Mode/CityBus_AT/175kW.vmap

Generic Vehicles/Engineering Mode/CityBus_AT/AT-Shift.vgbs

... Vehicles/Engineering Mode/CityBus_AT/CityBus_AT_PS.vecto

...c Vehicles/Engineering Mode/CityBus_AT/CityBus_AT_PS.vveh

...ering Mode/CityBus_AT/CityBus_AT_PS_RegionalDelivery.vmod

...ineering Mode/CityBus_AT/CityBus_AT_PS_UrbanDelivery.vmod

...Vehicles/Engineering Mode/CityBus_AT/CityBus_AT_Ser.vecto

... Vehicles/Engineering Mode/CityBus_AT/CityBus_AT_Ser.vsum

... Vehicles/Engineering Mode/CityBus_AT/CityBus_AT_Ser.vveh

...ring Mode/CityBus_AT/CityBus_AT_Ser_RegionalDelivery.vmod

...neering Mode/CityBus_AT/CityBus_AT_Ser_UrbanDelivery.vmod

Generic Vehicles/Engineering Mode/CityBus_AT/Driver.vacc

...hicles/Engineering Mode/CityBus_AT/Engine_175kW_6.8l.veng

...hicles/Engineering Mode/CityBus_AT/GearboxPowerSplit.vgbx

...c Vehicles/Engineering Mode/CityBus_AT/GearboxSerial.vgbx

...ehicles/Engineering Mode/CityBus_AT/RegionalDelivery.vdri

...Vehicles/Engineering Mode/CityBus_AT/TorqueConverter.vtcc

...ngineering Mode/CityBus_AT/TorqueConverterPowerSplit.vtcc

...c Vehicles/Engineering Mode/CityBus_AT/UrbanDelivery.vdri