[Feature Request]: Add the same keyword to all blocks in a file, or add document keywords

[peizimo]

Is there an existing issue for the same feature request?

• I have checked the existing issues.

Is your feature request related to a problem?

No response

Describe the feature you'd like

Add the same keyword to all blocks in a file, or add document keywords

Describe implementation you've considered

No response

Documentation, adoption, use case

No response

Additional information

No response

[peizimo]

Hope to add this function and API, thank you

[devMls]

I suppose that this issue is related with #3690 and #4096

This can be a step

[peizimo]

You are really professional

我想这个问题与 #3690 和 #4096 有关

这可以是一个步骤