[LMS-2500] experimentally expose an API method to check if MATLAB users can digest POJOs

screening/source/java/OpenBISScreeningML.java

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

...cisd/openbis/plugin/screening/server/ScreeningServer.java

...penbis/plugin/screening/server/ScreeningServerLogger.java

...bis/plugin/screening/server/logic/PlateContentLoader.java

...enbis/plugin/screening/server/logic/ScreeningApiImpl.java

...s/plugin/screening/shared/api/v1/IScreeningApiServer.java

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

...nbis/plugin/screening/shared/api/v1/dto/WellMetadata.java