[Bugfix] Fix authorizer stub by adding missing method (#180)

Co-authored-by: Alexander Helmroos <[email protected]>

Author: helmroos

stubs/authorizer.stub

@@ -69,7 +69,20 @@ class {{ class }} implements Authorizer
     }
 
     /**
-     * Authorize the show-related and show-relationship controller action.
+     * Authorize the show-related controller action
+     *
+     * @param Request $request
+     * @param object $model
+     * @param string $fieldName
+     * @return bool
+     */
+    public function showRelated(Request $request, object $model, string $fieldName): bool
+    {
+        // TODO: Implement showRelated() method.
+    }
+
+    /**
+     * Authorize the show-relationship controller action.
      *
      * @param Request $request
      * @param object $model