feat: renamed old frontend and fixed some minor bugs

frontend/src/pages/user/layout.tsx

@@ -0,0 +1,7 @@
+import { createFileRoute } from "@tanstack/react-router";
+
+import { PersonalSettingsLayout } from "@app/layouts/PersonalSettingsLayout";
+
+export const Route = createFileRoute("/_authenticate/personal-settings/_layout")({
+  component: PersonalSettingsLayout
+});