Add quickfix removing names of function expressions

idea/testData/quickfix/migration/removeNameFromFunctionExpression/basic.kt

@@ -0,0 +1,7 @@
+// "Remove identifier from function expression" "true"
+
+fun foo() {
+    (fun bar<caret>() {
+        return@bar
+    })
+}

idea/testData/quickfix/migration/removeNameFromFunctionExpression/basic.kt.after

@@ -0,0 +1,7 @@
+// "Remove identifier from function expression" "true"
+
+fun foo() {
+    (bar@ fun() {
+        return@bar
+    })
+}

idea/testData/quickfix/migration/removeNameFromFunctionExpression/manyFilesMuitliple.after.data.Sample.kt

@@ -0,0 +1,3 @@
+fun main() {
+    (fun() {})
+}

idea/testData/quickfix/migration/removeNameFromFunctionExpression/manyFilesMuitliple.after.kt

@@ -0,0 +1,46 @@
+// "Remove identifier from function expressions in the whole project" "true"
+
+inline fun run(block: () -> Unit) = block()
+annotation class ann
+
+fun foo() {
+    l2@ @ann l2@ fun local() {
+        run(l1@ fun() { return@l1 })
+
+        run(label@ expr@ fun() {
+            return@label
+            return@expr
+        })
+    }
+}
+
+class A {
+    fun bar() {
+        run(toRun@ fun() {
+            if (1 == 1) return@toRun
+            return@bar
+        })
+
+        run(
+                /* abc */  fun /* cde */ () {
+                    return@bar
+                }
+        )
+
+        run(
+                /* abc */
+                foo@ fun /* cde */ () {
+                    return@foo
+                }
+        )
+    }
+
+    init {
+        (foo@ fun A.() {
+            (fun() {
+                val x = 1
+            })
+            return@foo
+        })
+    }
+}

idea/testData/quickfix/migration/removeNameFromFunctionExpression/manyFilesMuitliple.before.Main.kt

@@ -0,0 +1,46 @@
+// "Remove identifier from function expressions in the whole project" "true"
+
+inline fun run(block: () -> Unit) = block()
+annotation class ann
+
+fun foo() {
+    l2@ @ann l2@ fun local() {
+        run(l1@ fun() { return@l1 })
+
+        run(label@ fun expr<caret>() {
+            return@label
+            return@expr
+        })
+    }
+}
+
+class A {
+    fun bar() {
+        run(fun toRun() {
+            if (1 == 1) return@toRun
+            return@bar
+        })
+
+        run(
+                /* abc */  fun /* cde */ toRun() {
+                    return@bar
+                }
+        )
+
+        run(
+                /* abc */
+                fun /* cde */ foo() {
+                    return@foo
+                }
+        )
+    }
+
+    init {
+        (fun A.foo() {
+            (fun bar() {
+                val x = 1
+            })
+            return@foo
+        })
+    }
+}

idea/testData/quickfix/migration/removeNameFromFunctionExpression/manyFilesMuitliple.before.data.Sample.kt

@@ -0,0 +1,3 @@
+fun main() {
+    (fun foo() {})
+}