Iterate Intention: Add support of destructuring declarations

idea/testData/intentions/iterateExpression/dataClassCollectionIterator.kt.after

@@ -0,0 +1,8 @@
+// WITH_RUNTIME
+data class Foo(val id: Int, val name: String)
+
+fun test() {
+    for ((id, name) in listOf(Foo(123, "def"), Foo(456, "abc"))) {
+        <caret>
+    }
+}