add fix:lint command (#1848)

frontend/package.json

@@ -44,6 +44,7 @@
     "make-i18n": "node scripts/make-i18n-translations.cjs",
     "prelint": "npm run make-i18n",
     "lint": "eslint src --ext .ts,.tsx,.js && prettier --check src/**/*.{ts,tsx}",
+    "lint:fix": "eslint src --ext .ts,.tsx,.js --fix && prettier --write src/**/*.{ts,tsx}",
     "prepare": "cd .. && husky install frontend/.husky"
   },
   "husky": {