feat(i18n): added i18next for user interface translations (#432)

i18n/config.ts

@@ -0,0 +1,32 @@
+import i18n from 'i18next';
+import { initReactI18next } from 'react-i18next';
+
+import translationEN from './translations/en-US.json';
+import translationPT from './translations/pt-BR.json';
+
+i18n
+  // pass the i18n instance to react-i18next.
+  .use(initReactI18next)
+  // init i18next
+  // for all options read: https://www.i18next.com/overview/configuration-options
+  .init({
+    // in case window.VEDACCIO_LANGUAGE is undefined,it will fall back to 'en-US'
+    lng: window?.__VERDACCIO_BASENAME_UI_OPTIONS?.language,
+    fallbackLng: 'en-US',
+    whitelist: ['en-US', 'pt-BR'],
+    load: 'currentOnly',
+    resources: {
+      'en-US': {
+        translation: translationEN,
+      },
+      'pt-BR': {
+        translation: translationPT,
+      },
+    },
+    debug: false,
+    interpolation: {
+      escapeValue: false, // react already safes from xss
+    },
+  });
+
+export default i18n;