feat: added russian translations

frontend/gettext.config.js

@@ -1,5 +1,5 @@
 module.exports = {
     output: {
-        locales: ['en', 'es', 'zh_CN', 'zh_TW', 'fr_FR'],
+        locales: ['en', 'es', 'zh_CN', 'zh_TW', 'fr_FR', 'ru_RU'],
     },
 }

frontend/src/gettext.ts

@@ -7,7 +7,8 @@ export default createGettext({
         zh_CN: '简',
         zh_TW: '繁',
         fr_FR: 'Fr',
-        es: 'Es'
+        es: 'Es',
+        ru_RU: 'Ru'
     },
     defaultLanguage: 'en',
     translations: translations,