Add comprehensive location tracking and replay functionality:

- **Location History System**
  - New `useLocationHistory` hook for tracking player movements
  - Records position, speed, heading, and timestamps
  - Calculates statistics (distance, average/max speed, duration)
  - Supports filtering by user and game ID

- **Game Statistics Component**
  - Display individual player stats (distance traveled, speed metrics)
  - Real-time statistics for all active players
  - Summary view with total player counts
  - Integrated into game master dashboard

- **Replay Viewer Component**
  - Timeline-based playback of player movements
  - Adjustable playback speed (1x, 2x, 4x, 8x)
  - Seek controls and progress visualization
  - Shows position, speed, and heading data

- **Testing**
  - 9 comprehensive tests for location history functionality
  - All 70 tests passing successfully
  - Full type safety and error handling

This completes Phase 4 of development, adding advanced analytics
and replay capabilities for post-game analysis.