River Race [Low Prio]: Add Host Power System

[Cojomax99]

Add the ability to set a player as the 'host' of River Race, and give that person powers, such as:

Throwable tornado item
Give a team hunger
Give a team speed boost
Give a team weapons
Give a team food
Spawn a hard boss
Spawn hostile mobs
Give a certain effect (levitation, poison, blindness, etc) to a team
“Go to Jail” - send a player to jail where they have to answer another trivia question to escape
Get out of jail free card
Flood?
Invert controls for X seconds
Turn everyone to tapirs