Circular reference caused by the load_from_ultralytics()

[zhiqwang]

Let me know if you have any thoughts/suggestions on how to fix that circular reference... I didn't look into it too closely yet.

Hi @mattpopovich , that's my bad, I mistakenly put the following two functions in the current position, and these two dependencies will cause the circular reference calls. I think it should be better to move load_from_ultralytics() into "yolort/models/_utils.py" and move contains_any_tensor into "yolort/utils/__init__.py" to solve this problem entirely.

https://github.com/zhiqwang/yolov5-rt-stack/blob/9a27b916da21a0143eb5497ee7ec6dced69f2358/yolort/utils/update_module_state.py#L40

https://github.com/zhiqwang/yolov5-rt-stack/blob/9a27b916da21a0143eb5497ee7ec6dced69f2358/yolort/data/_helper.py#L52

I'll submit a PR to resolve this issue.

Originally posted by @zhiqwang in #367 (comment)