implements resultServer interface to store results using ontology/statements table

Registering default (phpfile) result page cache

 $ sudo -u www-data php index.php '\oat\taoOutcomeUi\scripts\tools\RegisterDefaultResultCache'

Delete result cache for a delivery execution aka. result

 $ sudo -u www-data php index.php 'oat\taoOutcomeUi\scripts\tools\DeleteResultCache' -u {deliveryExecutionUri}