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

node_modules/next/dist/build/webpack/loaders/utils.d.ts

@@ -0,0 +1,13 @@
+import type webpack from 'webpack';
+export declare function isClientComponentEntryModule(mod: webpack.NormalModule): boolean;
+export declare const regexCSS: RegExp;
+export declare function isCSSMod(mod: {
+    resource: string;
+    type?: string;
+    loaders?: {
+        loader: string;
+    }[];
+}): boolean;
+export declare function encodeToBase64<T extends object>(obj: T): string;
+export declare function decodeFromBase64<T extends object>(str: string): T;
+export declare function getLoaderModuleNamedExports(resourcePath: string, context: webpack.LoaderContext<any>): Promise<string[]>;