Additional parameter for picker

[philitell]

It would be great to have the possibility to pass a custom dict (kwarg) to picker-method. Then we could implement an imageSource-selection-logic in onPressed-method of an addMoreButton and pass the argument to the picker-method to decide which picker to choose based on that argument.

  Future<bool> pickImages(params) async {  // additional params
    final pickedImages = await picker(maxImages > 1 ? true : false, params);  // pass params to picker
    if (pickedImages.isNotEmpty) {
      _addImages(pickedImages);
      notifyListeners();
      return true;
    }
    return false;
  }