Updated sl and en translations

client/package.json

@@ -15,9 +15,11 @@
     "@emotion/styled": "^11.14.1",
     "firebase": "^12.2.1",
     "framer-motion": "^12.23.12",
+    "i18next": "^25.5.2",
     "next-themes": "^0.4.6",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
+    "react-i18next": "^15.7.3",
     "react-icons": "^5.5.0"
   },
   "devDependencies": {