OP Lifesteal Toggling duel win message

[itz_taran]

Minecraft username:

Itz_taran​

Suggestion:

Toggling duel win message​

Detailed description:

Alot of messages come when someone wins in /duel against someone and then a chat message comes saying Player A won against Play B in duel which fries me​

Reason(s):

I dont like it​

Example(s):

in /Settings make it that you can toggle whether or not you want to see the message​