twig person/thirdparty renderbox: add a customArea option

with 2 areas to begin:
* before the label
* after the label

src/Bundle/ChillPersonBundle/Templating/Entity/PersonRender.php

@@ -62,6 +62,7 @@ class PersonRender extends AbstractChillEntityRender
             'address_multiline' => $options['address_multiline'] ?? false,
             'hLevel' => $options['hLevel'] ?? 3,
             'customButtons' => $options['customButtons'] ?? [],
+            'customArea' => $options['customArea'] ?? [],
         ];
 
         return