Support :: references to properties in frontend

#KT-1183 In Progress

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

@@ -0,0 +1,11 @@
+class A {
+    fun test() {
+        ::foo : KExtensionProperty<A, String>
+        ::bar : KMutableExtensionProperty<A, Int>
+    }
+}
+
+val A.foo: String get() = ""
+var A.bar: Int
+    get() = 42
+    set(value) { }