Perform OpenID authentication

remote_frontend/src/App.tsx

@@ -1,4 +1,5 @@
 import { ServerApi } from "./api/ServerApi";
+import { AuthRouteWidget } from "./routes/AuthRouteWidget";
 import { AsyncWidget } from "./widgets/AsyncWidget";
 
 export function App() {
@@ -8,7 +9,13 @@ export function App() {
       errMsg="Failed to load server configuration!"
       load={ServerApi.LoadConfig}
       loadingMessage="Loading server configuration..."
-      build={() => <>todo</>}
+      build={() => <AppInner />}
     />
   );
 }
+
+function AppInner(): React.ReactElement {
+  if (!ServerApi.Config.authenticated && !ServerApi.Config.disable_auth)
+    return <AuthRouteWidget />;
+  return <>todo authenticated</>;
+}