refactor(ui): changed frontend to normal i18n without SSR

frontend/src/i18n.ts

@@ -0,0 +1,37 @@
+import { initReactI18next } from 'react-i18next';
+import i18n from 'i18next';
+import LanguageDetector from 'i18next-browser-languagedetector';
+import Backend from 'i18next-http-backend';
+// don't want to use this?
+// have a look at the Quick start guide
+// for passing in lng and translations on init
+
+i18n
+  // load translation using http -> see /public/locales (i.e. https://github.com/i18next/react-i18next/tree/master/example/react/public/locales)
+  // learn more: https://github.com/i18next/i18next-http-backend
+  // want your translations to be loaded from a professional CDN? => https://github.com/locize/react-tutorial#step-2---use-the-locize-cdn
+  .use(Backend)
+  // detect user language
+  // learn more: https://github.com/i18next/i18next-browser-languageDetector
+  .use(LanguageDetector)
+  // pass the i18n instance to react-i18next.
+  .use(initReactI18next)
+  // init i18next
+  // for all options read: https://www.i18next.com/overview/configuration-options
+  .init({
+    fallbackLng: 'en',
+    supportedLngs: ['en', 'ko', 'fr', 'pt-BR', 'pt-PT', 'es'],
+    debug: process.env.NODE_ENV === 'development',
+    detection: {
+      lookupLocalStorage: 'lang'
+    },
+    ns: ['translations'],
+    interpolation: {
+      escapeValue: false // not needed for react as it escapes by default
+    },
+    react: {
+      useSuspense: false
+    }
+  });
+
+export default i18n;