I find myself wanting `compareToEqual` again. <ht...

# strikt

[Eric]

I find myself wanting compareToEqual again.

https://kotlinlang.slack.com/archives/CAR7KJ96J/p1663781526609259

This time passing in a comparator:

fun <T : Comparable<T>> Assertion.Builder<T>.compareToEqual(
    expected: T,
    comparator: Comparator<T> = Comparator.naturalOrder(),
) = assert("is equal using Comparator to %s", expected) {
    if (comparator.compare(subject, expected) == 0) pass() else fail()
}