Create cannon.json (#1134)

Author: qugebert

data/presets/historic/cannon.json

@@ -0,0 +1,21 @@
+{
+    "icon": "roentgen-cannon",
+    "fields": [
+        "name",
+        "start_date",
+        "direction"
+    ],
+    "moreFields": [
+        "description",
+        "wikipedia",
+        "wikidata",
+        "ref"
+    ],
+    "geometry": [
+        "point"
+    ],
+    "tags": {
+        "historic": "cannon"
+    },
+    "name": "Cannon"
+}