ByteTrack-Eigen 2.1.0

New Features

• Enabled cross-platform compilation (Issue #1: Platform Compatibility), thanks to @Dachui66

Bugs Squashed

• Clean up removed_tracks member variable to avoid memory growth (Issue #2: Memory Bug), thanks to @Dachui66
• Applied recommended change to KalmanBBoxTrack::tlwh() to avoid compilation error in Debug mode (Issue #3), thanks to @Dachui66