feat(i18n): add locale switcher

components/custom/navbar.tsx

@@ -5,6 +5,7 @@ import Link from "next/link"
 import { cn } from "@/lib/utils"
 import { ThemeSwitch } from "./theme-switch"
 import { useTranslations } from "next-intl"
+import { LocaleSwitch } from "./locale-switch"
 
 export default function Navbar() {
   const [scrolled, setScrolled] = useState(false);
@@ -55,7 +56,10 @@ export default function Navbar() {
           </li>
         </ul>
         
-        <ThemeSwitch/>
+        <div className="flex gap-3">
+          <ThemeSwitch/>
+          <LocaleSwitch/>
+        </div>
       </nav>
     </header>
   )