message: chore: add coverage command in package.json
diff: "build-storybook": "build-storybook",
  "check-translation": "prettier --check ../superset/translations/**/LC_MESSAGES/*.json",
  "clean-translation": "prettier --write ../superset/translations/**/LC_MESSAGES/*.json",
  + "core:cover": "cross-env NODE_ENV=test jest --coverage --coverageThreshold='{\"global\":{\"statements\":100,\"branches\":100,\"functions\":100,\"lines\":100}}' --collectCoverageFrom='[\"packages/**/src/**/*.{js,ts}\", \"!packages/superset-ui-demo/**/*\"]' packages",
  "cover": "cross-env NODE_ENV=test jest --coverage",
  "dev": "webpack --mode=development --color --watch",
  "dev-server": "cross-env NODE_ENV=development BABEL_ENV=development node --max_old_space_size=4096 ./node_modules/webpack-dev-server/bin/webpack-dev-server.js --mode=development",
  