Do not use _id alias in result.

[Siebov]

Hey guys! Love your package so much. We were using jenssegers version and just starting migration process. Love new features and updates.

Our front-end uses and expects _id everywhere. Is there any way to force builder not to convert _id to id in results?
I've already did a fork of the your repo and using smth like

if (config('sys.CONVERT_MONGO_ID_RESULT', true)) {
   if (array_key_exists('_id', $values) && !array_key_exists('id', $values)) {
       $values['id'] = $values['_id'];
       unset($values['_id']);
   }
}