Add inscription field to tourism=artwork (#1664)

Author: kjonosm

data/presets/tourism/artwork.json

@@ -8,7 +8,8 @@
     "moreFields": [
         "level",
         "material",
-        "subject/wikidata"
+        "subject/wikidata",
+        "inscription"
     ],
     "geometry": [
         "point",