Add OC-SORT tracker support and align dependency versions

Add Filter IDs feature, new video examples, and improve code readability

Merge remote-tracking branch 'origin/main'

Pre-load RF-DETR models at startup and add progress bar

Update requirements.txt

Update requirements.txt

Update requirements.txt

add Trackers Playground demo with class filtering, visualization flags, and examples

update app.py

add Trackers Playground demo with tracking UI, class filtering, and video examples

initial commit