[Feature Request] 构建产物里额外提供个预览区样式的文件

[sunsonliu]

Prerequisites

• [ ] There isn't an existing issue that requests the same feature, to avoid duplicates.

Clear and concise description of the problem

部分业务只用cherry.engine，在获取html后，他们也需要引入对应的样式文件

Suggested solution

No response

Further Information

No response

Contributing

None