storybook: add custom menu icons to the guessers story

Author: slax57

src/stories/custom/UsingGuessers.stories.tsx

@@ -1,3 +1,5 @@
+import AutoStoriesIcon from '@mui/icons-material/AutoStories';
+import ReviewsIcon from '@mui/icons-material/Reviews';
 import React from 'react';
 import { HydraAdmin } from '../../hydra';
 import ResourceGuesser from '../../core/ResourceGuesser';
@@ -103,13 +105,15 @@ export const UsingGuessers = () => (
       show={BookShow}
       edit={BookEdit}
       create={BookCreate}
+      icon={AutoStoriesIcon}
     />
     <ResourceGuesser
       name="reviews"
       list={ReviewList}
       show={ReviewShow}
       edit={ReviewEdit}
       create={ReviewCreate}
+      icon={ReviewsIcon}
     />
   </HydraAdmin>
 );