Remove the images.json and replace with frontmatter

layouts/film.shtml

@@ -96,7 +96,7 @@
   <div class="film-container">
     <h1 :text="$page.title"></h1>
     <div class="post" :html="$page.content()"></div>
-    <div class="image-grid" :loop="$page.asset('images.json').ziggy().get('images')">
+    <div class="image-grid" :loop="$page.custom.get('images')">
       <a href="$page.asset($loop.it).link()" target="_blank">
         <img src="$page.asset($loop.it).link()">
       </a>