add tourism=alpine_hut in vegetarian and vegan quest

[tiptoptom]

No description provided.

[HolgerJeromin]

Fine with me, but we have (nearly) no such entries in openstreetmap right now:
https://taginfo.openstreetmap.org/tags/tourism%3Dalpine_hut#combinations

[tiptoptom]

Fine with me, but we have (nearly) no such entries in openstreetmap right now:

That's right. Is that an obstacle?

Here are the current figures:

diet:kosher=no                   10
diet:halal=no                    12
diet:vegan=no                    16
diet:vegan=yes                   25
diet:vegan                       41
diet:vegetarian=yes              72
diet:vegetarian                  75
tourism=alpine_hut            13872