Fix #496: Missing image "contentUrl" metadata

Author: caendesilva

src/Models/Image.php

@@ -179,6 +179,8 @@ public function getMetadataArray(): array
             $metadata['name'] = $this->title;
         }
 
+        $metadata['contentUrl'] = $this->getSource();
+
         return $metadata;
     }
 }