Pegasus Plugin

First release !

• Each player can only have one Pegasus (data are stocked and loaded from a file at reboot)
• New commands :

1. /pegasus-respawn : Either teleport your Pegasus to your location, or create a Pegasus identical to your previous one
2. /pegasus-clear : Kill all Pegasus not registered to a player
3. /pegasus-forclear : Kill all Horses and reset association data for Pegasus and players