feat(lst): tan stack routes added with protected routes

frontend/src/routes/_auth.tsx

@@ -0,0 +1,12 @@
+import {createFileRoute, redirect} from "@tanstack/react-router";
+
+// src/routes/_authenticated.tsx
+export const Route = createFileRoute("/_auth")({
+    beforeLoad: async ({context}) => {
+        if (!context.sessionType.session) {
+            throw redirect({
+                to: "/",
+            });
+        }
+    },
+});