Import from external reference resources on create

[skurzinz]

Colleagues are eager to import existing authority controlled or LOD data.

• persons: GND, WikiData
• places: GND, GeoNames, maybe syriaca.org, WikiData
• events: GND (https://d-nb.info/standards/elementset/gnd#HistoricSingleEventOrEra), WikiData

Imported entities should also retain multiple language labels and their respective language code, specifically:

• en
• de
• hu
• ro
• sr-lat
• tr
• ota (ottoman turkish, not many labels are likely to be available)
• cz
• sk
• hr
• lat

Is this a simple switch to turn or a major hassle to implement? Much desirable.