Allow resolve class declarations in class objects

Use INACCESSIBLE_OUTER_CLASS_EXPRESSION error for marking already resolved elements

 #KT-3261 Fixed

compiler/testData/diagnostics/tests/inner/selfAnnotationForClassObject.kt

@@ -0,0 +1,9 @@
+class Test {
+    [ClassObjectAnnotation]
+    [NestedAnnotation]
+    class object {
+        annotation class ClassObjectAnnotation
+    }
+
+    annotation class NestedAnnotation
+}