Add a Tracker

To integrate a new tracker cleanly:

1. Add a module under boxmot/trackers/<name>/.
2. Implement a tracker class that subclasses BaseTracker and defines update().
3. Register it in boxmot/trackers/tracker_zoo.py.
4. Export it from boxmot/trackers/__init__.py and boxmot/__init__.py.
5. Add a default YAML under boxmot/configs/trackers.
6. Add a tracker doc page and wire it into mkdocs.yml.
7. Extend tests and CI matrices where needed.

Optional native C++ backend

If the tracker also gets a native backend:

1. Add native sources under boxmot/native/trackers/<name>/.
2. Add Python wrapper code under boxmot/native/<name>_cpp.py.
3. Register live and replay backends in boxmot/native/registry.py.
4. Document --tracker-backend cpp support on the tracker page.
5. Add native wrapper tests under tests/unit/test_native_<name>.py.

Native tracker sources should follow the existing CMake layout: a replay executable for cached benchmark modes and a shared library for live track.

Minimum checklist

• tracker implementation
• tracker registration
• tracker YAML
• docs page
• tests
• workflow matrices if benchmarked in CI
• native C++ registration and tests if a native backend is added