Add 7 FlightQ daily games (SkyQ, AirportQ, PlaneQ, RailQ, PassportQ, CityQ, Headcount)

[Clayjohnson75]

Adding seven daily games from FlightQ — all free, one puzzle per day, no account or login required.

Vehicles

• SkyQ — guess the day's mystery flight from progressive clues (route, duration, aircraft, airline).
• AirportQ — guess the mystery airport from clues about its airlines, traffic, and runways.
• PlaneQ — name the daily commercial aircraft from the airlines that operate it.
• RailQ — guess the day's train route from its operator and stations.

Geography

• PassportQ — guess the mystery city from clues like temperature, population, elevation, and airlines.
• CityQ — fill a 3x3 grid with world cities matching the category on each row and column.
• Headcount — draw a circle on the world map to capture a target population each day.

Appended to dles.json with fresh ids (779–785). Happy to adjust categories or descriptions if you'd prefer.