feat: add 404 page (#145)

apps/nextjs/src/app/[locale]/manage/[...not-found]/page.tsx

@@ -0,0 +1,16 @@
+import { getScopedI18n } from "@homarr/translation/server";
+import { Center, Stack, Text, Title } from "@homarr/ui";
+
+export default async function NotFound() {
+  const t = await getScopedI18n("management.notFound");
+  return (
+    <Center h="100%">
+      <Stack align="center">
+        <Title order={1} tt="uppercase">
+          {t("title")}
+        </Title>
+        <Text>{t("text")}</Text>
+      </Stack>
+    </Center>
+  );
+}