Custom Murder Mystery

Add MurderMystery mode:

• Use '/cbr register manager "murdermystery:MMGameProcessManager"' to switch to MurderMystery, and use '/cbr register manager "battleroyale:GameManager"' to switch back
• Add MurderMysteryProcessManager api command
• Auto set role with delay, tick corresponding zone funcs when survivor/detective/murder set
• Filter survivor/murder item when pickup
• Add CountdownEvent, SetRoleEvent, DelayedRoleKillEvent to custom event class
• Add survive time goal progress bar

Datapack:

• Register all murder mystery event tag
• Add wrong kill punishment
• Add set-role message, effect
• Add countdown sounds
• Add extra sound to murderer death