Intentions: Implement "Introduce local variable" intention

#KT-11768 Fixed

idea/testData/intentions/introduceVariable/.intention

@@ -0,0 +1 @@
+org.jetbrains.kotlin.idea.intentions.IntroduceVariableIntention

idea/testData/intentions/introduceVariable/afterExpression.kt

@@ -0,0 +1,5 @@
+fun foo(a: Int, b: Int) = a + b
+
+fun foo() {
+    foo(1 + 2, 3 * 4) <caret>//
+}

idea/testData/intentions/introduceVariable/afterExpression.kt.after

@@ -0,0 +1,5 @@
+fun foo(a: Int, b: Int) = a + b
+
+fun foo() {
+    val foo = foo(1 + 2, 3 * 4)<caret> //
+}

idea/testData/intentions/introduceVariable/atExpressionEnd.kt

@@ -0,0 +1,5 @@
+fun foo(a: Int, b: Int) = a + b
+
+fun foo() {
+    foo(1 + 2, 3 * 4)<caret>
+}

idea/testData/intentions/introduceVariable/atExpressionEnd.kt.after

@@ -0,0 +1,5 @@
+fun foo(a: Int, b: Int) = a + b
+
+fun foo() {
+    val foo = foo(1 + 2, 3 * 4)<caret>
+}

idea/testData/intentions/introduceVariable/atExpressionStart.kt

@@ -0,0 +1,5 @@
+fun foo(a: Int, b: Int) = a + b
+
+fun foo() {
+    <caret>foo(1 + 2, 3 * 4)
+}

idea/testData/intentions/introduceVariable/atExpressionStart.kt.after

@@ -0,0 +1,5 @@
+fun foo(a: Int, b: Int) = a + b
+
+fun foo() {
+    val foo = foo(1 + 2, 3 * 4)<caret>
+}

idea/testData/intentions/introduceVariable/atNestedExpression.kt

@@ -0,0 +1,5 @@
+fun foo(a: Int, b: Int) = a + b
+
+fun foo() {
+    foo(1 <caret>+ 2, 3 * 4)
+}

idea/testData/intentions/introduceVariable/atNestedExpression.kt.after

@@ -0,0 +1,5 @@
+fun foo(a: Int, b: Int) = a + b
+
+fun foo() {
+    val foo = foo(1 + 2, 3 * 4)<caret>
+}

idea/testData/intentions/introduceVariable/beforeExpression.kt

@@ -0,0 +1,6 @@
+// IS_APPLICABLE: false
+fun foo(a: Int, b: Int) = a + b
+
+fun foo() {
+   <caret> foo(1 + 2, 3 * 4)
+}

idea/testData/intentions/introduceVariable/noType.kt

@@ -0,0 +1,6 @@
+// IS_APPLICABLE: false
+fun foo(a: Int, b: Int) = a + b
+
+fun foo() {
+   val foo = foo(1 + 2, 3 * 4)<caret>
+}

idea/testData/intentions/introduceVariable/nothingType.kt

@@ -0,0 +1,4 @@
+// IS_APPLICABLE: false
+fun foo(): Int {
+   return 1 + 2<caret>
+}

idea/testData/intentions/introduceVariable/unitType.kt

@@ -0,0 +1,6 @@
+// IS_APPLICABLE: false
+fun foo(a: Int, b: Int) {}
+
+fun foo() {
+   foo(1 + 2, 3 * 4)<caret>
+}

idea/testData/quickfix/createFromUsage/createClass/referenceExpression/classByNestedGroovyQualifier.before.Main.kt

@@ -1,4 +1,5 @@
 // "Create class 'A'" "false"
 // ACTION: Rename reference
+// ACTION: Introduce local variable
 // ERROR: Unresolved reference: A
 fun foo() = J.<caret>A.B

idea/testData/quickfix/createFromUsage/createSecondaryConstructor/groovyConstructor.before.Main.kt

@@ -2,5 +2,6 @@
 // ERROR: Too many arguments for public constructor G() defined in G
 // ACTION: Convert to block body
 // ACTION: Create function 'G'
+// ACTION: Introduce local variable
 
 fun test() = G(<caret>1)

idea/testData/quickfix/typeMismatch/parameterTypeMismatch/changeFunctionParameterType4.kt

@@ -1,5 +1,6 @@
 // "Change parameter 'z' type of function 'foo' to '(Int) -> String'" "false"
 // ACTION: To raw string literal
+// ACTION: Introduce local variable
 
 fun foo(y: Int = 0, z: (Int) -> String = {""}) {
     foo {