[MV]: Load data from WFS

[k-nut]

Mecklenburg-Vorpommern also provides a (hard to find) WFS service for schools. It unfortunately does not provide geojson output but I think that it would still be worth it to switch to it since it will give us geolocations. We should be able to use this as a start url:

https://www.geodaten-mv.de/dienste/schulstandorte_wfs?SERVICE=WFS&REQUEST=GetFeature&VERSION=2.0.0&typeNames=ms%3Aschultyp_regional%2Cms%3Aschultyp_gymnasium%2Cms%3Aschultyp_gesamt%2Cms%3Aschultyp_waldorf%2Cms%3Aschultyp_foerder%2Cms%3Aschultyp_abendgym%2Cms%3Aschultyp_berufs&srsname=EPSG%3A4326

GetCapabailites is https://www.geodaten-mv.de/dienste/schulstandorte_wfs?SERVICE=WFS&REQUEST=GetCapabilities&VERSION=2.0.0