Iterate Intention: Add support of destructuring declarations

idea/testData/intentions/iterateExpression/collectionIteratorWithComponents.kt

@@ -0,0 +1,10 @@
+// WITH_RUNTIME
+class Foo(val id: Int, val name: String)
+
+operator fun Foo.component1() = id
+operator fun Foo.component2() = name
+operator fun Foo.component3() = "$name: $id"
+
+fun test() {
+    listOf(Foo(123, "def"), Foo(456, "abc"))<caret>
+}

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

@@ -0,0 +1,12 @@
+// WITH_RUNTIME
+class Foo(val id: Int, val name: String)
+
+operator fun Foo.component1() = id
+operator fun Foo.component2() = name
+operator fun Foo.component3() = "$name: $id"
+
+fun test() {
+    for ((i, s, s1) in listOf(Foo(123, "def"), Foo(456, "abc"))) {
+        <caret>
+    }
+}

idea/testData/intentions/iterateExpression/dataClassCollectionIterator.kt

@@ -0,0 +1,6 @@
+// WITH_RUNTIME
+data class Foo(val id: Int, val name: String)
+
+fun test() {
+    listOf(Foo(123, "def"), Foo(456, "abc"))<caret>
+}

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>
+    }
+}

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

@@ -1,6 +1,6 @@
 // WITH_RUNTIME
 fun test() {
-    for (entry in mapOf(1 to "1", 2 to "2")) {
+    for ((i, s) in mapOf(1 to "1", 2 to "2")) {
         <caret>
     }
 }