add new datatype geojson

[buildvoc10]

Hello still working on mappics deployment, was wondering if you could clarify the workflow "it fetches place description. A short one (like Goðafoss Waterfall and a long one (like Goðafoss Waterfall, Goðafossvegur, Öxará, Þingeyjarsveit, Norðurland eystra, Ísland). This is based on the Exif GPS information stored in the photo and obtained from Nominatim and OpenStreetMap APIs" as would like to use OpenstreetMap API to fetch description for geojson data -polygon building footprint https://github.com/buildvoc/buildingshistory/blob/main/geojson-example/osgb1000015671624.geojson -national heritage building information https://github.com/buildvoc/buildingshistory/blob/main/geojson-example/National_Heritage_List_for_England_NHLE-chalfield-house.geojson

which files does mappics use to fetch description, many thanks