Katton.pick / pickMany

`Katton.pick`

Katton.pick(list)

returns one random element from a list, or null if the list is empty

val colors = ["red", "blue", "lime", "yellow"]
val chosen = Katton.pick(colors)

Katton.log.info("chosen color: " + chosen)

always consider that the pick could potentially return something empty

`Katton.pickMany`

Katton.pickMany(list, amount)

returns up to amount unique random elements (never duplicates)

val allPlayers = Katton.players.all()
val winners = Katton.pickMany(allPlayers, 3) // pick 3 random winners, or fewer if there arent 3 players

for (winner in winners) {
    winner.sendMessage("&6you won!")
}