chore: add i18n

client/package.json

@@ -13,8 +13,11 @@
     "@types/react": "^19.0.11",
     "@types/react-dom": "^19.0.4",
     "antd": "^5.24.7",
+    "i18next": "^25.0.1",
+    "i18next-browser-languagedetector": "^8.0.5",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
+    "react-i18next": "^15.5.1",
     "react-router-dom": "^7.5.0",
     "react-scripts": "5.0.1",
     "typescript": "^4.9.5",