Implement quick-fix replacing parameter name with _

This quick-fix is registered for UNUSED_* diagnostic in places
where it can be applied (destructured declarations/lambda parameters)

 #KT-14431 Fixed

idea/testData/quickfix/decreaseVisibility/exposedParameterType.kt

@@ -3,6 +3,7 @@
 // ACTION: Make 'Nested' internal
 // ACTION: Make 'Nested' public
 // ACTION: Remove parameter 'arg'
+// ACTION: Rename to _
 // ACTION: Convert to expression body
 // ERROR: 'internal' function exposes its 'private' parameter type argument Nested
 // ERROR: Cannot access 'Nested': it is private in 'Outer'

idea/testData/quickfix/renameToUnderscore/commonDestructuring.kt

@@ -0,0 +1,8 @@
+// "Rename to _" "true"
+
+data class A(val x: String, val y: Int)
+
+fun bar() {
+    val (x<caret>, y) = A("", 1)
+    y.hashCode()
+}

idea/testData/quickfix/renameToUnderscore/commonDestructuring.kt.after

@@ -0,0 +1,8 @@
+// "Rename to _" "true"
+
+data class A(val x: String, val y: Int)
+
+fun bar() {
+    val (_, y) = A("", 1)
+    y.hashCode()
+}

idea/testData/quickfix/renameToUnderscore/forDestructuring.kt

@@ -0,0 +1,9 @@
+// "Rename to _" "true"
+
+data class A(val x: String, val y: Int)
+
+fun bar(z: List<A>) {
+    for ((x<caret>, y) in z) {
+        y.hashCode()
+    }
+}

idea/testData/quickfix/renameToUnderscore/forDestructuring.kt.after

@@ -0,0 +1,9 @@
+// "Rename to _" "true"
+
+data class A(val x: String, val y: Int)
+
+fun bar(z: List<A>) {
+    for ((_, y) in z) {
+        y.hashCode()
+    }
+}

idea/testData/quickfix/renameToUnderscore/lambdaDestructuring.kt

@@ -0,0 +1,13 @@
+// "Rename to _" "true"
+
+data class A(val x: String, val y: Int)
+
+fun foo(block: (A) -> Unit) {
+    block(A("", 1))
+}
+
+fun bar() {
+    foo { (x<caret>, y: Int) ->
+        y.hashCode()
+    }
+}

idea/testData/quickfix/renameToUnderscore/lambdaDestructuring.kt.after

@@ -0,0 +1,13 @@
+// "Rename to _" "true"
+
+data class A(val x: String, val y: Int)
+
+fun foo(block: (A) -> Unit) {
+    block(A("", 1))
+}
+
+fun bar() {
+    foo { (_<caret>, y: Int) ->
+        y.hashCode()
+    }
+}

idea/testData/quickfix/renameToUnderscore/lambdaParameter.kt

@@ -0,0 +1,10 @@
+// "Rename to _" "true"
+fun foo(block: (String, Int) -> Unit) {
+    block("", 1)
+}
+
+fun bar() {
+    foo { x<caret>: String, y: Int ->
+        y.hashCode()
+    }
+}

idea/testData/quickfix/renameToUnderscore/lambdaParameter.kt.after

@@ -0,0 +1,10 @@
+// "Rename to _" "true"
+fun foo(block: (String, Int) -> Unit) {
+    block("", 1)
+}
+
+fun bar() {
+    foo { _: String, y: Int ->
+        y.hashCode()
+    }
+}

idea/testData/quickfix/renameToUnderscore/noActionForCommonVal.kt

@@ -0,0 +1,8 @@
+// "Rename to _" "false"
+// ACTION: Remove variable 'x'
+// ACTION: Specify type explicitly
+// ACTION: Split property declaration
+
+fun bar() {
+    val x<caret> = 1
+}