text: Title: How to plot confusion matrix in yolov5-cls
  Body: ### Search before asking
  
  - [X] I have searched the YOLOv5 [issues](https://github.com/ultralytics/yolov5/issues) and [discussions](https://github.com/ultralytics/yolov5/discussions) and found no similar questions.
  
  
  ### Question
  
  Hello! I am trying to find out how to plot confusion matrix for yolov5 classification task. I want to compare confusion matrix together with other metrics of trained models on custom dataset of both yolov5 and yolov8. Any ideas , suggestions or help would be appreciated!
  
  ### Additional
  
  _No response_