add route for creating a person, and post api

src/Bundle/ChillMainBundle/CRUD/Controller/AbstractCRUDController.php

@@ -40,6 +40,20 @@ class AbstractCRUDController extends AbstractController
         return $e;
     }
 
+    /**
+     * Create an entity.
+     * 
+     * @param string $action
+     * @param Request $request
+     * @return object
+     */
+    protected function createEntity(string $action, Request $request): object
+    {
+        $type = $this->getEntityClass();
+        
+        return new $type;
+    }
+
     /**
      * Count the number of entities
      *