Add address format for Mexico

re: #1219, re: openstreetmap/iD#9928

Author: bhousel

data/address_formats.json

@@ -196,6 +196,14 @@
       "postcode": 0.2
     }
   },
+  {
+    "countryCodes": ["mx"],
+    "format": [
+      ["street", "housenumber"],
+      ["neighbourhood"],
+      ["postcode", "city", "state"]
+    ]
+  },
   {
     "countryCodes": ["in"],
     "format": [