Add src/index script call to index.html so site works

Author: benkoppe

frontend/index.html

@@ -17,6 +17,7 @@
     <link rel="apple-touch-icon" href="/logo192.png" />
     <link rel="manifest" href="/manifest.json" />
     <script src="https://accounts.google.com/gsi/client" async defer></script>
+    <script type="module" src="/src/index.tsx"></script>
     <!--
       Notice the use of %PUBLIC_URL% in the tags above.
       It will be replaced with the URL of the `public` folder during the build.