writing CIF and MRF for exempted completed bus, move MRF from schema 0.9.1 into 0.8 (as 0.8 is still in development)
additional testcase for completed exempted bus

update xml schema on smart electrics for primary bus and vif. update sample xml files and test files

- VehicleCode to BodyworkCode
- DeclarationType to VehicleDeclarationType
- AdBlueDosing to SCRReagentDosing

Vehicle dimensions can only be changed as group now and renamed VectoStageInputType to InterimStageInputType as well as ExemptedVectoStageInputType to ExemptedInterimStageInputType