feat: implement membership confirmation flow and update related functionalities

app/auth/membership-confirmation/layout.tsx

@@ -0,0 +1,11 @@
+import { withI18n } from '~/lib/i18n/with-i18n';
+
+async function SiteLayout(props: React.PropsWithChildren) {
+  return (
+    <div className={'flex min-h-[100vh] flex-col items-center justify-center'}>
+      {props.children}
+    </div>
+  );
+}
+
+export default withI18n(SiteLayout);