feature: New fields for Flight

[flymia]

We need some more detailed fields for tracking the flights.

• Required fields:
  • Landing Performance: Landing Rate in ft/min (fpm).
  • Fuel Management: Burned Fuel vs. Planned Fuel (efficiency check).
  • Network Integration: Pilot CID (VATSIM/IVAO). Maybe link to external trackers (SimAware, Volanta, etc.).
• Optional fields:
  • IATA Delay Codes: Reason for delays (e.g., Code 89 for de-icing).
  • Cost Index (economy).