docs: replace README with Next.js boilerplate template

Updated README.md from a detailed OllaHub project description to the standard Next.js getting started template, likely to initialize or reset the project as a Next.js application.

components/theme-provider.tsx

@@ -0,0 +1,20 @@
+"use client";
+
+import * as React from "react";
+import { ThemeProvider as NextThemesProvider } from "next-themes";
+
+export function ThemeProvider({
+  children,
+  ...props
+}: React.ComponentProps<typeof NextThemesProvider>) {
+  return (
+    <NextThemesProvider
+      attribute="class"
+      defaultTheme="system"
+      enableSystem
+      {...props}
+    >
+      {children}
+    </NextThemesProvider>
+  );
+}