chore: add basic routing for next auth

auth.config.ts

@@ -0,0 +1,9 @@
+import type { NextAuthConfig } from "next-auth";
+
+export const authConfig = {
+  pages: {
+    signIn: "/sign-in",
+    // signUp: "/sign-up",
+  },
+  providers: [],
+} satisfies NextAuthConfig;