more general endpoint for labels
The current label endpoint was developed for determining the labels of a vocabulary value in the oersi-frontend. Each property / vocabulary must be implemented individually and implicitly. It would be desirable to implement a more general approach here, so that the vocabulary properties have to be specified at most in the configuration.
This new, more general endpoint could then also be included in the public API, as this is also of interest to external services (for example orca.nrw and twillo) and cannot easily be determined directly from the data in a performant way.
After switching to the new public endpoint, the old internal endpoint can then be switched off. (Note: the internal endpoint is currently used by orca.nrw).