feat: Support Traditional Chinese (#336)

### What problem does this PR solve?

Support Traditional Chinese

Issue link: #335
### Type of change

- [x] New Feature (non-breaking change which adds functionality)

web/src/locales/config.ts

@@ -3,15 +3,18 @@ import { initReactI18next } from 'react-i18next';
 
 import translation_en from './en';
 import translation_zh from './zh';
+import translation_zh_traditional from './zh-traditional';
 
 const resources = {
   en: translation_en,
   zh: translation_zh,
+  'zh-TRADITIONAL': translation_zh_traditional,
 };
 
 i18n.use(initReactI18next).init({
   resources,
   lng: 'en',
+  fallbackLng: 'en',
   interpolation: {
     escapeValue: false,
   },