Feature Localization (i18n) Support (#557)

* init localization

* Update defaul to en

* Fix merge issue and import path.

* Set default to en

* Change jsx to tsx

* Update the password max length string.

* Remove languageContext as using the recoil instead.

client/src/store/language.js

@@ -0,0 +1,8 @@
+import { atom } from 'recoil';
+
+const lang = atom({
+  key: 'lang',
+  default: 'en'
+});
+
+export default { lang };