refactor - move JS into its own directory

index.html

@@ -128,10 +128,10 @@
     </div>
 
     <script src="https://www.puck-js.com/puck.js"></script>
-    <script src="utils.js"></script>
+    <script src="js/utils.js"></script>
-    <script src="comms.js"></script>
+    <script src="js/comms.js"></script>
-    <script src="appinfo.js"></script>
+    <script src="js/appinfo.js"></script>
-    <script src="index.js"></script>
+    <script src="js/index.js"></script>
     <script src="https://cdn.jsdelivr.net/npm/file-saver@2.0.2/dist/FileSaver.min.js" type="application/javascript"></script>
   </body>
 </html>