Add support for limiting the number of instances in a video about supervision

[SkalskiP]

Hi @westlinkin 👋🏻, I'm not sure how we would implement such logic. If the model detects 23 people, not 22, how do you know which of those players is a double detection?

[westlinkin]

@SkalskiP we can drop the 23rd people if no.23 'suddenly' appears in the middle of the video. if there are 23 people in the beginning, we can just drop the lowest confidence one.

I created a tool to limit the max tracking instances, but I am still testing it, if it is good enough, I will submit a PR

[SkalskiP]

Hi @westlinkin 👋🏻 Thank you very much for your interest in Supervision as well as the time you spent preparing this PR. After careful analysis, I have decided to side with @LinasKo's comments and not merge this PR. I share a similar opinion - it seems to me that this tool is not universal enough. I know it works in the case you described, but nevertheless, I believe its place is not in Supervision. Thank you once again for the time invested.