Add wikimedia_commons field to AED preset

[matkoniecz]

based on feedback from ongoing mapping campaign in Poland - it is useful to link an AED photo within context of location - additional confirmation, makes easier to locate it, may be possible to provide extra info

https://wiki.openstreetmap.org/wiki/Tag:emergency%3Ddefibrillator

https://wiki.openstreetmap.org/wiki/Key:wikimedia_commons

https://www.openstreetmap.org/edit?editor=id&node=9412020017#map=20/52.17183/21.23175