feat: Implement internationalization with English and Thai locales and a language switcher.

Frontend-Learner/nuxt.config.ts

@@ -1,7 +1,23 @@
 // Nuxt 3 + Quasar + Tailwind + TypeScript
 // Configuration for E-Learning Platform
 export default defineNuxtConfig({
-  modules: ["nuxt-quasar-ui", "@nuxtjs/tailwindcss"],
+  modules: ["nuxt-quasar-ui", "@nuxtjs/tailwindcss", "@nuxtjs/i18n"],
+  
+  // i18n Configuration
+  i18n: {
+    strategy: 'no_prefix',
+    defaultLocale: 'th',
+    locales: [
+      { code: 'th', name: 'ไทย', iso: 'th-TH' },
+      { code: 'en', name: 'English', iso: 'en-US' }
+    ],
+    vueI18n: './i18n.config.ts',
+    detectBrowserLanguage: {
+      useCookie: true,
+      cookieKey: 'i18n_redirected',
+      redirectOn: 'root'
+    }
+  },
   css: ["~/assets/css/main.css"],
   typescript: {
     strict: true,