feat: add redirect page

pages/[hash].tsx

@@ -0,0 +1,28 @@
+import { GetServerSideProps } from "next";
+import React from "react";
+
+import { getRedirectByHash } from "./api/redirects/[hash]";
+
+const RedirectPage = () => <div>You shouldn't be here 🤔</div>;
+
+export const getServerSideProps: GetServerSideProps<{}, { hash: string }> =
+  async ({ params, res }) => {
+    const { hash } = params!;
+    const redirect = await getRedirectByHash(hash);
+
+    if (!redirect)
+      return {
+        notFound: true,
+      };
+    else {
+      res.setHeader("Cache-Control", "max-age=90");
+      return {
+        redirect: {
+          destination: redirect.url,
+          statusCode: 301,
+        },
+      };
+    }
+  };
+
+export default RedirectPage;