Add `publisher` and `issued` query parameters for lobid-resources

See:

https://github.com/hbz/nwbib/issues/49
https://github.com/hbz/nwbib/issues/54
Support `publisher` and `issued` query parameters in facets route

See:

https://github.com/hbz/nwbib/issues/49
https://github.com/hbz/nwbib/issues/54
Merge pull request #42 from hbz/publisher-issued-params

Add `publisher` and `issued` query parameters for lobid-resources