Introduce Variable: Support destructuring declarations

#KT-6262

idea/testData/refactoring/introduceVariable/multiDeclarations/notOperators.kt

@@ -0,0 +1,8 @@
+class A
+
+fun A.component1() = 1
+fun A.component2() = 2
+
+fun test() {
+    <selection>A()</selection>
+}

idea/testData/refactoring/introduceVariable/multiDeclarations/notOperators.kt.after

@@ -0,0 +1,8 @@
+class A
+
+fun A.component1() = 1
+fun A.component2() = 2
+
+fun test() {
+    val a = A()
+}

idea/testData/refactoring/introduceVariable/multiDeclarations/singleComponent.kt

@@ -0,0 +1,7 @@
+class A
+
+operator fun A.component1() = 1
+
+fun test() {
+    <selection>A()</selection>
+}

idea/testData/refactoring/introduceVariable/multiDeclarations/singleComponent.kt.after

@@ -0,0 +1,7 @@
+class A
+
+operator fun A.component1() = 1
+
+fun test() {
+    val a = A()
+}

idea/testData/refactoring/introduceVariable/multiDeclarations/unresolvedComponent3.kt

@@ -0,0 +1,12 @@
+class A
+
+operator fun A.component1() = 1
+operator fun A.component2() = 2
+
+class B {
+    operator fun A.component3() = 3
+}
+
+fun test() {
+    <selection>A()</selection>
+}

idea/testData/refactoring/introduceVariable/multiDeclarations/unresolvedComponent3.kt.after

@@ -0,0 +1,12 @@
+class A
+
+operator fun A.component1() = 1
+operator fun A.component2() = 2
+
+class B {
+    operator fun A.component3() = 3
+}
+
+fun test() {
+    val (i, i1) = A()
+}

idea/testData/refactoring/introduceVariable/multiDeclarations/unusedExpr.kt

@@ -0,0 +1,4 @@
+// WITH_RUNTIME
+fun test() {
+    <selection>1 to 2</selection>
+}

idea/testData/refactoring/introduceVariable/multiDeclarations/unusedExpr.kt.after

@@ -0,0 +1,4 @@
+// WITH_RUNTIME
+fun test() {
+    val (i, i1) = 1 to 2
+}

idea/testData/refactoring/introduceVariable/multiDeclarations/usedExpr.kt

@@ -0,0 +1,4 @@
+// WITH_RUNTIME
+fun test() {
+    (<selection>1 to 2</selection>).first
+}

idea/testData/refactoring/introduceVariable/multiDeclarations/usedExpr.kt.after

@@ -0,0 +1,5 @@
+// WITH_RUNTIME
+fun test() {
+    val pair = 1 to 2
+    pair.first
+}