OZG-6239 Move test factories

.../ozgcloud/xta/test/app/data/XtaMessageRepositoryTest.java

...e/ozgcloud/xta/test/app/factory/PartyTypeTestFactory.java

...loud/xta/test/app/factory/XtaCloseRequestTestFactory.java

.../de/ozgcloud/xta/test/app/factory/XtaFileTestFactory.java

.../test/app/factory/XtaLookupServiceRequestTestFactory.java

.../ozgcloud/xta/test/app/factory/XtaMessageTestFactory.java

...va/de/ozgcloud/xta/test/app/mapper/RequestMapperTest.java

...a/de/ozgcloud/xta/test/app/mapper/ResponseMapperTest.java

...de/ozgcloud/xta/test/app/service/TempFileTestFactory.java

.../ozgcloud/xta/test/app/service/XtaMessageServiceTest.java