Create a function that takes an array of items and checks if the last item matches the rest of the array concatenated together.
matchLastItem(["rsq", "6hi", "g", "rsq6hig"]) ➞ true
// The last item is the rest joined.
matchLastItem([1, 1, 1, "11"]) ➞ false
// The last item should be "111".
matchLastItem([8, "thunder", true, "8thundertrue"]) ➞ true
The array is always filled with items.