Implement logic to check if editing of document is blocked by workflow

Using the workflow handlers we return the workflow that is attached to an object
so that within the workflowDocumentService we can then check whether this workflow blocks
the edition of a document.

src/Bundle/ChillMainBundle/Workflow/EntityWorkflowHandlerInterface.php

@@ -51,4 +51,6 @@ interface EntityWorkflowHandlerInterface
     public function supports(EntityWorkflow $entityWorkflow, array $options = []): bool;
 
     public function supportsFreeze(EntityWorkflow $entityWorkflow, array $options = []): bool;
+
+    public function findByRelatedEntity(object $object): ?EntityWorkflow;
 }