Support World bank metadata editor - software & publishing action

[eblondel]

Info on metadata editor https://www.ihsn.org/node/708

R library (ongoing development): https://github.com/ihsn/metadataeditr

Dev branch: https://github.com/r-geoflow/geoflow/tree/390-wb-metadataeditr