Change logic of loader; register types

gastro.json

@@ -1,4 +1,5 @@
 {
+    "type": "category",
     "query": "(node[amenity~'^(bar|biergarten|cafe|fast_food|ice_cream|pub|restaurant)$'];way[amenity~'^(bar|biergarten|cafe|fast_food|ice_cream|pub|restaurant)$'];relation[amenity~'^(bar|biergarten|cafe|fast_food|ice_cream|pub|restaurant)$'];);",
     "minZoom": 16,
     "markerSign": "{% if tags.amenity=='bar' %}🍸{% elseif tags.amenity=='biergarten'%}🍻{% elseif tags.amenity=='cafe' %}☕{% elseif tags.amenity=='fast_food' %}🍔{% elseif tags.amenity=='ice_cream' %}🍨{% elseif tags.amenity=='pub' %}🍺{% else %}🍴{% endif %}",

parks.json

@@ -1,4 +1,5 @@
 {
+    "type": "category",
     "query": "(way[leisure=park];relation[leisure=park];)",
     "style": {
         "color": "green",

trees.json

@@ -1,4 +1,5 @@
 {
+    "type": "category",
     "query": "node[natural=tree];",
     "style": {
           "nodeFeature": "CircleMarker",