Support :: references to properties in frontend

#KT-1183 In Progress

compiler/testData/diagnostics/testsWithStdLib/callableReference/property/memberFromExtension.kt

@@ -0,0 +1,19 @@
+class A {
+    val foo: Unit = Unit.VALUE
+    var bar: String = ""
+    var self: A
+        get() = this
+        set(value) { }
+}
+    
+fun A.test() {
+    val x = ::foo
+    val y = ::bar
+    val z = ::self
+
+    x : KMemberProperty<A, Unit>
+    y : KMutableMemberProperty<A, String>
+    z : KMutableMemberProperty<A, A>
+
+    y.set(z.get(A()), x.get(A()).toString())
+}