Added winter service

winter_service.json

@@ -0,0 +1,27 @@
+{
+    "type": "overpass",
+    "name": {
+        "en": "Winter Service",
+        "de": "Winterdienst",
+        "nl": "Strooiroutes"
+    },
+    "query": {
+        "16": "(way[highway];)"
+    },
+    "feature": {
+        "markerSymbol": "",
+        "style": {
+            "color": [
+                "{% if  attribute(tags, 'winter_service') == \"yes\" %}",
+                "green",
+                "{% elseif attribute(tags, 'winter_service') == \"limited\" %}",
+                "yellow",
+                "{% elseif attribute(tags, 'winter_service') == \"no\" %}",
+                "red",
+                "{% else %}",
+                "grey",
+                "{% endif %}"
+            ]
+        }
+    }
+}