Extend lobid GND to JSKOS mapping #68
Description
Extend function toJSKOS in lobid-api-provider to map more fields of GND (e.g. professionOrOccupation, firstComposer any many more) to JSKOS. Full list of properties in https://lobid.org/gnd/context.jsonld and https://d-nb.info/standards/elementset/gnd.
There is some previous work to build on at https://github.com/gbv/jskos-php-examples/blob/master/src/lib/GNDService.yaml.