[ticket/12730] Add Google+ profile field type

Google+ has a "+" before a custom URL but doesn't for those which are using
their integer ID. To cover that we need to have an extra profile field

PHPBB3-12730

phpBB/config/profilefields.yml

@@ -55,6 +55,15 @@ services:
         tags:
             - { name: profilefield.type }
 
+    profilefields.type.googleplus:
+        class: phpbb\profilefields\type\type_googleplus
+        arguments:
+            - @request
+            - @template
+            - @user
+        tags:
+            - { name: profilefield.type }
+
     profilefields.type.int:
         class: phpbb\profilefields\type\type_int
         arguments: