Repackage classes to be in accordance with DDD guidance

readme.md

...ringframework/samples/petclinic/PetClinicApplication.java

...k/samples/petclinic/boundary/web/owner/OwnerResource.java

...ework/samples/petclinic/boundary/web/pet/PetResource.java

...work/samples/petclinic/boundary/web/pet/PetValidator.java

...ework/samples/petclinic/boundary/web/vet/VetResource.java

...k/samples/petclinic/boundary/web/visit/VisitResource.java

...framework/samples/petclinic/domain/model/owner/Owner.java

...samples/petclinic/domain/model/owner/OwnerRepository.java

...rk/samples/petclinic/domain/model/owner/OwnerService.java

...ringframework/samples/petclinic/domain/model/pet/Pet.java

...ork/samples/petclinic/domain/model/pet/PetRepository.java

...mework/samples/petclinic/domain/model/pet/PetService.java

...framework/samples/petclinic/domain/model/pet/PetType.java

...amework/samples/petclinic/domain/model/vet/Specialty.java

...ringframework/samples/petclinic/domain/model/vet/Vet.java

...ork/samples/petclinic/domain/model/vet/VetRepository.java

...mework/samples/petclinic/domain/model/vet/VetService.java

...ingframework/samples/petclinic/domain/model/vet/Vets.java

...framework/samples/petclinic/domain/model/visit/Visit.java