Icon for amenity=animal_breeding

It seems here is an icon missing for amenity=animal_breeding. JOSM has [one](https://josm.openstreetmap.de/browser/josm/trunk/resources/images/presets/misc/animal_breeding.svg?rev=18627), and I made a [monochrome version](https://gist.github.com/Hufkratzer/310c1cf18674fe2424381d9f2499b098) from this.