Resolve callable reference expressions

#KT-1183 In Progress

compiler/testData/diagnostics/tests/callableReference/innerConstructorFromTopLevel.kt

@@ -0,0 +1,10 @@
+class A {
+    inner class Inner
+}
+
+fun main() {
+    ::<!UNRESOLVED_REFERENCE!>Inner<!>
+    val y = A::Inner
+
+    y : KMemberFunction0<A, A.Inner>
+}