List individual language entries in Dunabeitia-2022-500

[LinguList]

https://concepticon.clld.org/contributions/Dunabeitia-2022-500

This concept list is a perfect example for NoRaRe, also because it has so many metadata points.

I think the dataset is best handled a bit similar to DatSemShift: we make a CLDF dataset of all data, we leave concept set links to English, but we model the CLDF data in such a way that we list it as a multilingual wordlist from which we then derive a more complex CSV file for Concepticon with additional data in JSON.

I'll add this issue to the plans for our graduate seminar, @alzkuc