add en/vi language

config/localization/i18n.ts

@@ -0,0 +1,27 @@
+import en from "@/locales/en.json";
+import vi from "@/locales/vi.json";
+import { getLocales } from "expo-localization";
+import { I18n } from "i18n-js";
+
+// Set the key-value pairs for the different languages you want to support
+const translations = {
+  en,
+  vi,
+};
+
+const i18n = new I18n(translations);
+
+// Set the locale once at the beginning of your app
+// This will be set from storage in the useI18n hook, default to device language or 'en'
+i18n.locale = getLocales()[0].languageCode ?? "vi";
+
+// Enable fallback mechanism - if a key is missing in the current language, it will use the key from English
+i18n.enableFallback = true;
+
+// Set default locale to English if no locale is available
+i18n.defaultLocale = "vi";
+
+// Storage key for locale preference
+export const LOCALE_STORAGE_KEY = "app_locale_preference";
+
+export default i18n;