Add JSON and TUI output modes for progress command

[dwerner]

Changes to phaser-cli:

• Add --json and --tui flags (mutually exclusive, TUI is default)
• Create ProgressOutput and WorkerOutput structs for JSON serialization
• Implement run_progress_json() that outputs one JSON line per update with RFC3339 timestamps and human-readable durations
• Implement run_progress_tui() with ratatui showing:
  • Job status panel with ID, status, and block counts
  • Progress bar (Gauge) with percentage, rate, and bytes
  • Workers table with stage, blocks, current block, rate, elapsed
  • Completed workers show ✓ and frozen elapsed time
  • Active workers show live current block and updating elapsed
  • Press 'q' to quit, auto-exit after job completion
• Add format_duration() helper for human-readable time (e.g., "15m3s")

Dependencies added:

• chrono for RFC3339 timestamp formatting
• ratatui for terminal UI
• crossterm for terminal control

This provides both machine-readable JSON output and a rich interactive TUI for monitoring sync job progress in real-time.