message: fix(pkg): add css files to the exports
diff: "import": "./dist/nocss/esm/index.js",
  "require": "./dist/nocss/umd/index.js"
  },
  - "./package.json": "./package.json"
  + "./package.json": "./package.json",
  + "./dist/style.css": "./dist/style.css",
  + "./dist/theme-default.css": "./dist/theme-default.css"
  },
  "types": "dist/esm/index.d.ts",
  "license": "MIT",
  