add login/sign-up page with dark/light mode

node_modules/next/dist/server/send-response.d.ts

@@ -0,0 +1,9 @@
+import type { BaseNextRequest, BaseNextResponse } from './base-http';
+/**
+ * Sends the response on the underlying next response object.
+ *
+ * @param req the underlying request object
+ * @param res the underlying response object
+ * @param response the response to send
+ */
+export declare function sendResponse(req: BaseNextRequest, res: BaseNextResponse, response: Response, waitUntil?: Promise<unknown>): Promise<void>;