Allow custom permit

Author: antulik

lib/active_interaction/extras/strong_params.rb

@@ -69,7 +69,11 @@ def permission_for_filter(filter, name = filter.name)
       when ActiveInteraction::HashFilter, ActiveInteraction::ObjectFilter
         { name => {} }
       else
-        name
+        if permit == true
+          name
+        else
+          { name => permit }
+        end
       end
     end
   end