fix: missing enum type town square (#662)

Author: kevcodez

src/main/java/com/google/maps/model/AddressType.java

@@ -452,6 +452,9 @@ public enum AddressType implements UrlValue {
   /** A tourist attraction */
   TOURIST_ATTRACTION("tourist_attraction"),
 
+  /** Currently not a documented return type. */
+  TOWN_SQUARE("town_square"),
+
   /**
    * Indicates an unknown address type returned by the server. The Java Client for Google Maps
    * Services should be updated to support the new value.

src/test/java/com/google/maps/model/EnumsTest.java

@@ -181,6 +181,7 @@ public void testCanonicalLiteralsForAddressType() {
     m.put(AddressType.ZOO, "zoo");
     m.put(AddressType.ARCHIPELAGO, "archipelago");
     m.put(AddressType.TOURIST_ATTRACTION, "tourist_attraction");
+    m.put(AddressType.TOWN_SQUARE, "town_square");
 
     for (Map.Entry<AddressType, String> addressTypeLiteralPair :
         addressTypeToLiteralMap.entrySet()) {