Add landing page for voicebox.sh

- Created a new landing page using Next.js 16, featuring a modern design with Tailwind CSS.
- Implemented essential components including Header, Footer, and DownloadSection for user navigation and download options.
- Configured Tailwind CSS and PostCSS for styling, and set up TypeScript for type safety.
- Added a README with setup instructions, project structure, and deployment guidelines.
- Integrated GitHub links for easy access to the repository and releases.
- Established a consistent UI with reusable components and responsive design.

landing/next.config.js

@@ -0,0 +1,12 @@
+/** @type {import('next').NextConfig} */
+const nextConfig = {
+  reactStrictMode: true,
+  output: 'standalone',
+  images: {
+    unoptimized: false,
+    formats: ['image/avif', 'image/webp'],
+  },
+  turbopack: {},
+};
+
+module.exports = nextConfig;