Deepstream compatible yolov8-seg Custom mask and bbox plugin

[neeraj-satyaki]

Hi triple-Mu,
I am really impressed by your work, its a lot of contribution for Yolov8.
I would request one more thing,

I am trying to export the model from nms_seg_plugin branch export code for some reason I could not export it.
Anyway I was able to do it with yolo cli, it looks like, tensorrt engine has different set of output layers. like
User
0 INPUT kFLOAT images 3x640x640
1 OUTPUT kFLOAT output1 32x160x160
2 OUTPUT kFLOAT output0 38x8400
Which is handled using CV2.
Could you give an idea, how we can implement this in deepstream custom parser plugin without CV2. Or directly implement it.

[triple-Mu]

Maybe you can get more info in https://github.com/triple-Mu/YOLOv8-TensorRT/blob/main/csrc/segment/normal/include/yolov8-seg.hpp#L229-L347