attach method
Implementation
@override
Widget? attach(BuildContext context, T controller) {
  return RawImageView(
    width: controller.width,
    height: controller.height,
    cacheMode: controller.cacheMode,
    image: controller.image,
    tint: controller.imageTint,
    tintMode: controller.imageTintMode,
    imageType: controller.type,
    scaleType: controller.scaleType,
    networkImageConfig: controller.networkImageConfig,
  );
}