Repackage classes to be in accordance with DDD guidance

...samples/petclinic/domain/model/visit/VisitRepository.java

...rk/samples/petclinic/domain/model/visit/VisitService.java

...ringframework/samples/petclinic/domain/shared/Person.java

...amples/petclinic/infrastructure/CallMonitoringAspect.java

.../samples/petclinic/infrastructure/config/CacheConfig.java

.../petclinic/infrastructure/config/PetclinicProperties.java

...rk/samples/petclinic/infrastructure/config/WebConfig.java

...springframework/samples/petclinic/model/package-info.java

...ingframework/samples/petclinic/service/ClinicService.java

...ramework/samples/petclinic/service/ClinicServiceImpl.java

...ngframework/samples/petclinic/support/jpa/BaseEntity.java

...gframework/samples/petclinic/support/jpa/NamedEntity.java

...les/petclinic/support/web/AbstractResourceController.java

.../samples/petclinic/boundary/web/pet/PetResourceTests.java

.../samples/petclinic/boundary/web/vet/VetResourceTests.java

...es/petclinic/domain/model/AbstractClinicServiceTests.java

...framework/samples/petclinic/domain/model/EntityUtils.java

...work/samples/petclinic/infrastructure/ValidatorTests.java