record single task states transition and add them in timeline

DependencyInjection/ChillTaskExtension.php

@@ -32,6 +32,8 @@ class ChillTaskExtension extends Extension implements PrependExtensionInterface
         $loader->load('services/workflow.yml');
         $loader->load('services/templating.yml');
         $loader->load('services/menu.yml');
+        $loader->load('services/event.yml');
+        $loader->load('services/timeline.yml');
     }
 
     public function prepend(ContainerBuilder $container)

DependencyInjection/Compiler/TaskWorkflowDefinitionCompilerPass.php

@@ -22,6 +22,7 @@ use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Chill\TaskBundle\Workflow\TaskWorkflowManager;
 use Symfony\Component\DependencyInjection\Reference;
 use Chill\TaskBundle\Templating\UI\CountNotificationTask;
+use Chill\TaskBundle\Event\Lifecycle\TaskLifecycleEvent;
 
 /**
  * 
@@ -39,6 +40,7 @@ class TaskWorkflowDefinitionCompilerPass implements CompilerPassInterface
         
         $workflowManagerDefinition = $container->getDefinition(TaskWorkflowManager::class);
         $counterDefinition = $container->getDefinition(CountNotificationTask::class);
+        $lifecycleDefinition = $container->getDefinition(TaskLifecycleEvent::class);
         
         foreach ($container->findTaggedServiceIds('chill_task.workflow_definition') as $id => $tags) {
             // registering the definition to manager
@@ -58,6 +60,12 @@ class TaskWorkflowDefinitionCompilerPass implements CompilerPassInterface
                     'method' => 'resetCacheOnNewStates',
                     'priority' => 0
                 ]);
+            $lifecycleDefinition
+                ->addTag('kernel.event_listener', [
+                    'event' => sprintf('workflow.%s.transition', $definition->getClass()::getAssociatedWorkflowName()),
+                    'method' => 'onTransition',
+                    'priority' => 0
+                ]);
         }
     }
 }