MR/ASDCBA-392-services-ports-adaptors-uc-4
requested to merge sub-task/ASDCBA-392-services-ports-adaptors-uc-4 into feature/ASDCBA-392-integration-mvp
Added the services, ports & adapters neccessary for UseCase 4: subscribe to a lot.
Added the services, ports & adapters neccessary for UseCase 4: subscribe to a lot.