message: Make sure that VectorOfVectorOfPoint is generated for imgproc
diff: @@ -1137,6 +1137,7 @@ pub static GENERATOR_MODULE_TWEAKS: Lazy<HashMap<&str, ModuleTweak>> = Lazy::new
  generate_types: vec![
  // for findContours()
  "std::vector<cv::Vec4i>",
  + "std::vector<std::vector<cv::Point>>",
  // for HoughLines()
  "std::vector<cv::Vec2f>",
  "std::vector<cv::Vec2d>",
  