Intentions: Convert extension receiver to parameter and vice versa

idea/testData/intentions/convertReceiverToParameter/topLevelFun.kt

@@ -0,0 +1,7 @@
+fun <caret>String.foo(n: Int): Boolean {
+    return length() - n/2 > 1
+}
+
+fun test() {
+    "1".foo(2)
+}