Set up pose_tracking_exp as a uv-managed Python package for offline multiview body tracking experiments.
This initial commit includes:
- the typed package scaffold, CLI entrypoints, and repo-local uv configuration
- scene and replay loaders for generic JSON replays and ActualTest parquet inputs
- ParaJumping payload conversion and RTMPose-to-body20 normalization
- a custom articulated tracker with tentative, active, and lost lifecycle handling
- RPT-backed proposal generation, camera convention handling, and multiview reprojection updates
- regression tests for normalization, camera conventions, ActualTest ingestion, seeding, and tracker smoke flows
- project documentation covering extrinsic formats and the ActualTest calibration caveat
