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/src/app/globals.css

@@ -0,0 +1,65 @@
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
+
+@layer base {
+  :root {
+    --background: 0 0% 100%;
+    --foreground: 0 0% 0%;
+    --card: 0 0% 100%;
+    --card-foreground: 0 0% 0%;
+    --popover: 0 0% 100%;
+    --popover-foreground: 0 0% 0%;
+    --primary: 0 0% 0%;
+    --primary-foreground: 0 0% 100%;
+    --secondary: 0 0% 96%;
+    --secondary-foreground: 0 0% 0%;
+    --muted: 0 0% 96%;
+    --muted-foreground: 0 0% 45%;
+    --accent: 0 0% 96%;
+    --accent-foreground: 0 0% 0%;
+    --destructive: 0 0% 0%;
+    --destructive-foreground: 0 0% 100%;
+    --border: 0 0% 90%;
+    --input: 0 0% 90%;
+    --ring: 0 0% 0%;
+    --radius: 0.5rem;
+  }
+
+  .dark {
+    --background: 0 0% 0%;
+    --foreground: 0 0% 100%;
+    --card: 0 0% 0%;
+    --card-foreground: 0 0% 100%;
+    --popover: 0 0% 0%;
+    --popover-foreground: 0 0% 100%;
+    --primary: 0 0% 100%;
+    --primary-foreground: 0 0% 0%;
+    --secondary: 0 0% 10%;
+    --secondary-foreground: 0 0% 100%;
+    --muted: 0 0% 10%;
+    --muted-foreground: 0 0% 65%;
+    --accent: 0 0% 10%;
+    --accent-foreground: 0 0% 100%;
+    --destructive: 0 0% 100%;
+    --destructive-foreground: 0 0% 0%;
+    --border: 0 0% 20%;
+    --input: 0 0% 20%;
+    --ring: 0 0% 100%;
+  }
+}
+
+@layer base {
+  * {
+    @apply border-border;
+  }
+  body {
+    @apply bg-background text-foreground;
+  }
+}
+
+@layer utilities {
+  .text-balance {
+    text-wrap: balance;
+  }
+}