adds changeset and createview domain elements

...int.kprime/adapter/service/XMLSerializerJacksonAdapter.kt

src/main/kotlin/unibz.cs.semint.kprime/domain/ChangeSet.kt

src/main/kotlin/unibz.cs.semint.kprime/domain/CreateView.kt

...n/unibz.cs.semint.kprime/scenario/PersonHSplitScenario.kt

...n/unibz.cs.semint.kprime/scenario/PersonVSplitScenario.kt

...lin/unibz.cs.semint.kprime/usecase/XMLSerializeUseCase.kt

...cs.semint.kprime/usecase/service/IXMLSerializerService.kt

...est/kotlin/unibz.cs.semint.kprime/domain/ChangeSetTest.kt

...unibz.cs.semint.kprime/scenario/PersonHSplitScenarioTI.kt

...semint.kprime/usecase/serialize/XMLSerializerTableTest.kt

src/test/resources/database_with_two_empty_tables.xml

src/test/resources/table_two_columns.xml