What is the difference between the original ultralytics package and custom ultralytics package used in yolo-tracking

[Hong-Pan]

You should not install the original ultrlytics package. We hold a custom ultralytics package.

Originally posted by @mikel-brostrom in #1107 (comment)

I want to use the detection functionality with rotated bbox in original ultralytics, and input the prediction results from yolov8 to trackers in yolo-tracking. As yolov8 only includes botsort and bytetrack, I want to integrate more tracking algorithms into yolov8 and compare their performance. I wonder what modifications need I to do on original ultralytics package, such that the detection predictions from yolov8 can be imported into trackers in yolo-tracking?