Push death messages through webhook onto discord channel

[PancakeTAS]

The idea is that players outside of the game can monitor when other players die, without constantly being on the server. That way players can play when they feel safe on the server due to some threat having died. Additionally, those players who are interested in their own death reason (which due to a 1.20.1 bug does not appear in the disconnect screen) will be able to find out the reason they died or the player they got one shot by.