feat: add back not found page

apps/www/src/app/not-found.tsx

@@ -0,0 +1,42 @@
+/*
+ * MHSF, Minehut Server List
+ * All external content is rather licensed under the ECA Agreement
+ * located here: https://mhsf.app/docs/legal/external-content-agreement
+ *
+ * All code under MHSF is licensed under the MIT License
+ * by open source contributors
+ *
+ * Copyright (c) 2025 dvelo
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+import { NotFoundComponent } from "@/components/util/not-found";
+import type { Metadata } from "next";
+
+export const metadata: Metadata = {
+  applicationName: "MHSF",
+  title: "Page not found · MHSF",
+  description: "Couldn't find the page that was requested.",
+};
+
+export default function NotFoundPage() {
+  return <NotFoundComponent />;
+}