Add support for dynamic theme switching in highlight.js styles within Kotlin fenced code blocks

site/src/jsMain/resources/index.html

@@ -318,7 +318,17 @@
         }
     </style>
 
-    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.11.1/styles/dark.min.css">
+    <link
+            id="hljs-light"
+            rel="stylesheet"
+            href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.11.1/styles/github.min.css"
+    />
+    <link
+            id="hljs-dark"
+            rel="stylesheet"
+            href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.11.1/styles/github-dark.min.css"
+            disabled
+    />
     <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.11.1/highlight.min.js"></script>
     <!-- and it's easy to individually load additional languages -->
     <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.11.1/languages/go.min.js"></script>