External AFK plugin through PlaceholderAPI

I'd like to use my own AFK plugin to check if a player is afk or not. I already wrote the code but I'm too dumb to figure out how maven works. Anyway, can someone finish what I started? That would be nice :)

https://github.com/JustusJG/PlayerViewDistanceController/commit/afe055465ac7c226254b352346927b3ff168e473