UI: ability to set resource filter to resources coming only from given endpoints with a GET request

[zozlak]

This would allow us to easily reuse the https://contentsearch.clarin.eu/ as a gateway to "all Austrian resources" instead of spawning a new instance with only Austrian endpoints registered in it.

[Querela]

I did start implementing this: https://github.com/clarin-eric/fcs-sru-aggregator/tree/feature/modules
It is currently WIP and will be "shipped" in the 4.0.0 major release.

Selection will use the information from the Centre Registry about Consortia, for Austrian resources, "CLARIAH-AT". More details will follow.

[zozlak]

The https://alpha-contentsearch.clarin.eu/?x-consortia=CLARIAH-AT&query=&queryType=cql works exactly how we would like it to work :-)