Intentions: function <-> property conversion

idea/testData/intentions/convertFunctionToProperty/unitFun.kt

@@ -0,0 +1,11 @@
+// WITH_RUNTIME
+// IS_APPLICABLE: false
+class A(val n: Int) {
+    fun <caret>foo() {
+        println(n)
+    }
+}
+
+fun test() {
+    A(1).foo()
+}