Add Quetzal transport system, Xeric's Talisman teleports, and teleport improvements

[samlol]

Adds support for several additional transport methods and improves how teleport items and fairy rings are handled by the walker.

New Features

Quetzal Transport System

• Added support for all 14 Quetzal landing sites in Varlamore
• Includes quest and varbit unlock checks before attempting travel

Xeric's Talisman Teleports

• Added support for the following destinations:
  • Xeric's Lookout
  • Xeric's Glade
  • Xeric's Inferno
  • Xeric's Heart

Teleport Improvements

• Teleport items can now be used when equipped as well as in inventory
• Added an equippedAction field to support items that expose different actions when worn
  (e.g. Ardougne cloak shows Kandarin Monastery when equipped but Monastery Teleport in inventory)

Fairy Ring Improvements

• Fairy rings now work when the Dramen or Lunar staff is in inventory
• The handler will automatically equip the staff if needed

Fix

• Fixed fairy ring handler logic that was checking !destination.travel(), which caused the handler to continue before the ring code was fully set and resulted in the Walker getting stuck.

Files Added / Modified

Added:

• QuetzalLanding.java

Modified:

• FairyRing.java
• TransportLoader.java
• TeleportItem.java
• TeleportLoader.java

Tested

• Quetzal transports between multiple landing sites
• Xeric's talisman teleports
• Ardougne cloak teleport when equipped
• Fairy rings with staff in inventory