Feature request: Ability to add explicit page breaks in PDF export

[addisonschultz]

Context: We prepare printed manuals from our company's digital documentation in Gitbook. We use Gitbook's PDF export function to generate a PDF, manually edit that PDF to suit our needs, and then send that PDF to a printer.

We'd love if there were a way to add explicit page breaks, in a way that doesn't affect the digital docs but shows up in PDF exports when printed.

The common issue that we've run into is text getting detached from an associated image, e.g.,

Here is an image of the system:

-- Page break because the image below can't fit on the above page --

system.jpg
We'd like to be able to specify:

-- Explicit page break --

Here is an image of the system:

system.jpg
Happy to provide additional information on our use case!

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Originally requested by @arsalansufi