Replace of DatasetCatalog with the new Catalog

[allyoucanmap]

The MetadataExplorer will be refactored inside this issue geosolutions-it/MapStore2#11930. The refactor will include also the support of the GeoNode api directly in the mapstore dataset catalog.

Needed changes:

• Update submodule to include the new plugin changes
• Remove the DatasetCatalog
• Introduction of the new MapStore Catalog plugin as official GeoNode layer catalog in map viewers

see related PR geosolutions-it/MapStore2#12107