Theme(pets): add pet shops (#2363)

assets/themes/pets/pets.json

@@ -98,6 +98,35 @@
         "name": null
       }
     },
+    {
+      "builtin": "shops",
+      "override": {
+        "id": "pet_shops",
+        "name": {
+          "en": "Pet stores",
+          "nl": "Dierenwinkels"
+        },
+        "=presets": [
+          {
+            "tags": [
+              "shop=pet"
+            ],
+            "title": {
+              "en": "a pet shop",
+              "nl": "een dierenwinkel"
+            }
+          }
+        ],
+        "source": {
+          "osmTags": {
+            "and": [
+              "shop=pet"
+            ]
+          }
+        },
+        "=filter": []
+      }
+    },
     {
       "builtin": "shops",
       "override": {
@@ -185,4 +214,4 @@
       }
     }
   ]
-}
+}