Suggestion: consensual PvP sessions via hit returns

[quiquelhappy]

Can you add an option to make a pvp session start when:

• a player hits another player (no damage taken)
• the player that was hit, hits the player back (no damage taken) -> the pvp session starts, damage taken from this point on

I feel like it is a very intuitive way of starting a pvp session that makes it consensual

[ChanceSD]

I already gave a short reply on spigot but explaining a bit more here I feel it would be cleaner to use a duel plugin for that. You could have pvp disabled for all players, and then they just use /duel when they want to fight. The Duels plugin has support for PvPManager afaik, so all you probably need is to drop it in