fixed cooldown time following the switch to nanoseconds

added a fail message for when a player tries to teleport when they're already teleporting.

added a message for when the plugin starts loading chunks before teleporting.

added in a PAPI expansion

• %rtp_player_status% - player's current teleport status
• %rtp_total_queue_length% - total number of locations available to a player in the region that "/rtp" would get
• %rtp_public_queue_length% - number of locations available to everyone in the region that "/rtp" would get
  
• %rtp_personal_queue_length% number of locations allocated specifically to a player in the region that"/rtp" would get