adds dql domain

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

...ain/kotlin/unibz.cs.semint.kprime/domain/dql/Attribute.kt

src/main/kotlin/unibz.cs.semint.kprime/domain/dql/From.kt

src/main/kotlin/unibz.cs.semint.kprime/domain/dql/Minus.kt

src/main/kotlin/unibz.cs.semint.kprime/domain/dql/Query.kt

src/main/kotlin/unibz.cs.semint.kprime/domain/dql/Select.kt

src/main/kotlin/unibz.cs.semint.kprime/domain/dql/Union.kt

src/main/kotlin/unibz.cs.semint.kprime/domain/dql/Where.kt

...in/kotlin/unibz.cs.semint.kprime/usecase/SQLizeUseCase.kt

src/test/kotlin/unibz.cs.semint.kprime/domain/QueryTest.kt