Introduce operations on Arrays returning Arrays: reversedArray, sortedArray.

#KT-8711

js/js.libraries/src/core/kotlin_special.kt

@@ -615,6 +615,13 @@ public fun ShortArray.sort(comparison: (Short, Short) -> Int): Unit {
     return noImpl
 }
 
+/**
+ * Sorts the array inplace according to the order specified by the given [comparator] object.
+ */
+public fun <T> Array<out T>.sortWith(comparator: Comparator<in T>): Unit {
+    sort { a, b -> comparator.compare(a, b) }
+}
+
 /**
  * Returns a *typed* object array containing all of the elements of this primitive array.
  */