add form to formatter

The formatter can add a form. This form is handle by controller and exportManager.

[WIP] The csv formatter ask the user to ordering the aggregators.

Resources/views/Form/fields.html.twig

@@ -132,4 +132,13 @@
     </ul>
     {% endif %}
 {% endspaceless %}
-{% endblock form_errors %}
+{% endblock form_errors %}
+
+{% block _formatter__aggregator_placement_csv_formatter_row %}
+    <h3>{{ form_label(form) }}</h3>
+    
+    {{ form_row(form.order) }}
+    
+    {{ form_row(form.position) }}
+    
+{% endblock %}