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/Interfaces/CasesInterface.php

@@ -0,0 +1,10 @@
+<?php
+
+namespace ProcessMaker\BusinessModel\Interfaces;
+
+interface CasesInterface
+{
+    public function setProperties(array $properties);
+    public function getData();
+    public function getCounter();
+}