[Enhancement] RPGitems: Buff time of the player

[TheKot1k]

Is your feature request related to a problem? Please describe.
I can give, receive, and have several different buffs using the functionality of the ProRPGitems plugin, but I have no way of knowing which buffs I am currently wearing, how long until they expire, and other information.

Describe the solution you'd like
Add the option to know what buffs a player is having now Maybe output information about the current buffs.
Also, output with placeholders the time until the end of the buff in hours, minutes and seconds format.

Describe alternatives you've considered
I can't use buffs as it's not practical.

Additional context
If I'm not mistaken, there was previously an option to remove all buffs with commands:

- /buffs reset <player> <type> <name> - Reset a buff from a player.
- /buffs resetall <player> <player> - Reset all buffs from a player.

So, why not return them, in addition to the idea I suggested? I think the buffs module deserves to get its improvements someday!