added governments layer and theme

assets/layers/governments/government.svg

@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
+	<circle cx="8" cy="8" r="3" fill="#4863A0"/>
+</svg>

assets/layers/governments/governments.json

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+{
+  "id": "governments",
+  "name": {
+    "en": "governments"
+  },
+  "source": {
+    "osmTags": {
+      "or": [
+        "office=government"
+      ]
+    }
+  },
+  "title": {
+    "render": {
+      "en": "Governmental Office {name}"
+    }
+  },
+  "minzoom": 13,
+  "tagRenderings": [
+    "images",
+    "phone",
+    "email",
+    "website",
+    {
+      "question": {
+        "en": "What is the name of this Governmental Office?"
+      },
+      "render": {
+        "en": "This Governmental Office is called {name}"
+      },
+      "freeform": {
+        "key": "name"
+      },
+      "id": "name"
+    }
+  ],
+  "presets": [
+    {
+      "title": {
+        "en": "a Governmental Office"
+      },
+      "tags": [
+        "office=government"
+      ]
+    }
+  ],
+  "mapRendering": [
+    {
+      "icon": {
+        "render": "circle:white;./assets/layers/governments/government.svg"
+      },
+      "iconSize": "40,40,center",
+      "location": [
+        "point",
+        "centroid"
+      ]
+    }
+  ]
+}

assets/layers/governments/license_info.json

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+[
+  {
+    "path": "government.svg",
+    "license": "CC0",
+    "authors": [
+      "OSM Carto"
+    ],
+    "sources": [
+      "https://wiki.openstreetmap.org/wiki/File:Office-16.svg"
+    ]
+  }
+]