Add codegen tests for local classes/objects declated in class initializers or class parameter initializers

compiler/testData/codegen/box/localClasses/anonymousObjectInInitializer.kt

@@ -0,0 +1,13 @@
+class A {
+    var a: String = "Fail"
+
+    {
+        a = object {
+            fun toString(): String = "OK"
+        }.toString()
+    }
+}
+
+fun box() : String {
+    return A().a
+}