Wouldn't it be useful to have a `partitionTo` func...

# stdlib

[Klitos Kyriacou]

Wouldn't it be useful to have a partitionTo function?

fun <T, C1 : MutableCollection<in T>, C2 : MutableCollection<in T>> Iterable<T>.partitionTo(
    trueDestination: C1,
    falseDestination: C2,
    predicate: (T) -> Boolean
): Pair<C1<T>, C2<T>>

This will return the same value as Pair(this.filterTo(trueDestination, predicate), this.filterTo(falseDestination, predicate)) but obviously more efficiently, without iterating twice.