Ability to save player cooldowns before shutting down server or exit the game.

[MairwunNx]

Cooldown additional functional for correct cooldowns behavior after re-logging or reloading server.

Currently, player cooldowns are not saved after exiting the game or rebooting the server, this is bad, because if it is a solitary world, then users can use this security hole for benefits.

For an explicit example, I can show this:

For example, you are the developer of one of the mods, you made an item that you want to make so that it can be used once every 5 minutes in real time. A player without waiting can simply exit the world and enter it again, thereby dropping object cooldowns or command cooldowns.