LMS-2735 client API and facade clean up. Unit tests for new functionality.

.../openbis/dss/screening/server/DssServiceRpcScreening.java

...is/dss/screening/server/DssServiceRpcScreeningLogger.java

...reening/server/logic/ImageRepresentationFormatFinder.java

...d/openbis/dss/screening/server/logic/ZoomLevelFinder.java

.../dss/screening/shared/api/v1/IDssServiceRpcScreening.java

...reening/client/api/v1/IScreeningOpenbisServiceFacade.java

...creening/client/api/v1/ScreeningOpenbisServiceFacade.java

...g/shared/api/v1/dto/AbstractFormatSelectionCriterion.java

...ugin/screening/shared/api/v1/dto/ColorDepthCriterion.java

...plugin/screening/shared/api/v1/dto/FileTypeCriterion.java

.../v1/dto/IImageRepresentationFormatSelectionCriterion.java

...plugin/screening/shared/api/v1/dto/IImageSetMetaData.java

...screening/shared/api/v1/dto/ImageMetaDataIdCriterion.java

...creening/shared/api/v1/dto/ImageRepresentationFormat.java

...plugin/screening/shared/api/v1/dto/OriginalCriterion.java

...bis/plugin/screening/shared/api/v1/dto/SizeCriterion.java

...in/screening/shared/basic/dto/ImageDatasetParameters.java

...bis/plugin/screening/shared/imaging/HCSDatasetLoader.java

...nbis/dss/screening/server/DssServiceRpcScreeningTest.java

...plugin/screening/shared/api/v1/dto/SizeCriterionTest.java