feat: implement initial language resolution for SSR and local storage support

- Added a function to determine the initial language based on server-side rendering and local storage.
- Updated i18n initialization to use the resolved initial language instead of the default.

src/app/layout.tsx

@@ -20,6 +20,11 @@ export const metadata: Metadata = {
   description: "Lottery player",
 };
 
+export const viewport = {
+  width: "device-width",
+  initialScale: 1,
+};
+
 export default function RootLayout({
   children,
 }: Readonly<{