feat(setup): add initial setup wizard for admin account and SMTP configuration

shop/app/auth/login/page.tsx

@@ -1,6 +1,12 @@
 import { LoginForm } from "@/components/login-form";
+import { isSetupNeeded } from "@/lib/actions/setup";
+import { redirect } from "next/navigation";
+
+export default async function Page() {
+  if (await isSetupNeeded()) {
+    redirect("/setup");
+  }
 
-export default function Page() {
   return (
     <div className="flex min-h-svh w-full items-center justify-center p-6 md:p-10">
       <div className="w-full max-w-sm">