PMC-858

Add new empty classes

Add methos to the interface an in the abstract class, fix canceled status

Added new setters/getters. Fix condition for 'oldestThan' validation.

Add default value for 'orderByColumn' property

Added table name in default value for order by column

workflow/engine/src/ProcessMaker/BusinessModel/Cases/Draft.php

@@ -0,0 +1,8 @@
+<?php
+
+namespace ProcessMaker\BusinessModel\Cases;
+
+class Draft extends AbstractCases
+{
+
+}