Add block-protection component

[Air-Cooled]

This function solves the problem (这个功能解决的问题)

For confidential content, it is forbidden to take photos or screenshots, and watermarks can be added; In case of leakage, it is convenient to confirm the source

Expected API (期望的 API)

Like : https://procomponents.ant.design/components/water-mark
Of course, it's best to disable ctrl-s to save the page content. It may be difficult, but I hope Naive will become more and more perfect!

[07akioni]

We may implement it later.

[Sepush]

I will have a try.