Implement ability to Save Flight/Airport to SQLite

[jtz15]

• Change name of “Saved Flights” to “Saved Flights/Airports”
• Make the bookmark icon a clickable button on BOTH flight info pages and airport info pages
  • Once clicked, bookmark should change its current state to the opposite (either being filled with a blue colour or just being outlined in blue)
  • Once clicked, the flight should be either added/removed from that user's Saved Flights SQLite.
• Create a savedAirportCard component (based off the savedFlightCard component, plus or minus some fields). When the bookmark icon is clicked on the airport info page, it saves to a savedAirportCard instead of a savedFlightCard.