Introduce propertyDelegated method in delegates

compiler/testData/codegen/box/delegatedProperty/propertyDelegatedMethod/delegateByTopLevelFun.kt

@@ -0,0 +1,15 @@
+class Delegate {
+    var name = ""
+    fun get(t: Any?, p: PropertyMetadata): String = name
+    fun propertyDelegated(p: PropertyMetadata) { name = p.name }
+}
+
+fun foo() = Delegate()
+
+class A {
+    val prop by foo()
+}
+
+fun box(): String {
+    return if (A().prop == "prop") "OK" else "fail"
+}