Add val KClass.staticProperties: Collection<KProperty0<*>>

To get static fields from Java classes

compiler/testData/codegen/boxWithJava/reflection/declaredVsInheritedProperties/J.java

@@ -0,0 +1,6 @@
+public class J {
+    public String publicMemberJ;
+    private String privateMemberJ;
+    public static String publicStaticJ;
+    private static String privateStaticJ;
+}