val's XP Cap

Version 1.0.0

• Keeps track of how much XP the player has earned in the current interval
• If the player exceeds the limit value, it subtracts out any extra XP the player earned, capping the player's XP gain.
• After the interval the player can earn XP again as the XP gain is set back to 0.
• Two configurable parameters in the load.mcfunction
  • scoreboard players set #max_xp_per_interval val_xp_config 420
  • scoreboard players set #ticks_per_interval val_xp_interval_counter 24000