Modify io.gdcc.dataverse-spi (ExportDataProvider) interface, a sub-issue of 11405 #11766
Description
I need additional mechanisms in the ExportDataProvide interface to implement the improvements in #11405 (primarily in the DDI exporter). The code of this interface is maintained in the main source tree, but for the purposes of building Dataverse it is used as a standalone dependency package, io.gdcc.dataverse-spi. So, the changes to the interface need to be merged, and the new version of it published on maven central before I could make the final PR to close #11405.