Additional Placeholders!

[Drc-DEV]

Description of feature/improvement request:
Some useful placeholders that can be added:

• last death reason -> providing the player's last death reason, CMI already stores this information.
  (For example I can get this info with CMI.getInstance().getSavedInventoryManager().getLastInv(player).getDeathReason())
• last death location -> providing the player's last death location, CMI already stores this information. (For example I can get this info with CMI.getInstance().getSavedInventoryManager().getLastInv(user).getLocation())
• last killer -> providing the last killer name (if it's a player) or EntityType name, or nothing if there's no killer in the last death reason. CMI kind of already stores this info. (For example I can get this info with CMI.getInstance().getSavedInventoryManager().getLastInv(user).getKiller())
• lastdeathtime - > providing the formatted time of the player's last death, CMI already stores this information (I can get this info with CMI.getInstance().getSavedInventoryManager().getLastInv(user).getTime()))

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Detailed explanation of what it should do, when and in what situation:

These placeholders can be easily added to CMI, since the plugin already stores these variables.

Basic explanation as to why this feature is needed and/or useful to have:

For example in a user panel gui/scoreboard in which the player wants to know who's his last killer and when and where he was killed, because sometimes people die afk, or just want to screenshot that info to report somebody.