Add Preview when exporting page to pdf

[tumbri1]

Describe the feature you'd like

I would like a function to see a pdf preview before exporting it, just like when printing a document to pdf normally.

Describe the benefits this would bring to existing BookStack users

This would allow users to be able to first check the pdf for correct formatting and possible errors before downloading the file.

Can the goal of this request already be achieved via other means?

Yes, by browser extensions. But it would be very useful to have this as an optional setting that could maybe be activated in the .env file.

Have you searched for an existing open/closed issue?

• [X] I have searched for existing issues and none cover my fundamental request

How long have you been using BookStack?

1 to 5 years

Additional context

No response