feat: add pt-BR language

Author: pomelo-nwu

website/app/[lang]/layout.tsx

@@ -73,6 +73,7 @@ const LanguageLayout: FC<LayoutProps> = async ({ children, params }) => {
         { locale: "fr", name: "Français" },
         { locale: "ru", name: "Русский" },
         { locale: "ja", name: "日本語" },
+        { locale: "pt-BR", name: "Português (BR)" },
       ]}
       sidebar={{
         defaultMenuCollapseLevel: 1,

website/next.config.mjs

@@ -17,7 +17,7 @@ export default withNextra({
   basePath: assetPrefix,
   assetPrefix: assetPrefix,
   i18n: {
-    locales: ["en", "zh", "de", "fr", "ru", "ja"],
+    locales: ["en", "zh", "de", "fr", "ru", "ja", "pt-BR"],
     defaultLocale: "en",
   },
   eslint: {

website/src/components/language-dropdown.tsx

@@ -12,6 +12,7 @@ const languages = [
   { locale: "fr", name: "Français", flag: "🇫🇷" },
   { locale: "ru", name: "Русский", flag: "🇷🇺" },
   { locale: "ja", name: "日本語", flag: "🇯🇵" },
+  { locale: "pt-BR", name: "Português (BR)", flag: "🇧🇷" },
 ];
 
 interface LanguageDropdownProps {