CyanSetHome

Add support for 1.21.2 + add missing null checks

Fix getRequiredXpLevelsToTp() not returning the correct value, as it was called with the position of the player to the position of the player, which made the return value always 1 (basically the xp taken from the player when it teleported to a home was always 1)

Add the possibility for players to choose whether XP points or XP levels will be used if the USE_XP_TP_TP_HOME option is enabled

• Use CyanLib 0.4.15 to fix translation issues
• Set the minOpLvlHomes option to 0 by default
• Set the useXpToTpHome option to false by default