Feature: Is there a plugin that implements pagination similar to Google Docs?

## Description
Is there a plugin that implements pagination similar to Google Docs?

I want to implement automatic pagination similar to Word and export the document as a Word file.
## Impact
Does anyone have an implementation idea or an existing demo? I can try to implement it myself?

No files, tests, or entry points are named. Start by checking Lexical's existing plugin and export capabilities, then determine the pagination and Word-file requirements. Done would require a defined implementation scope, a working pagination experience, and a verified Word export.

Written by the indexing model from the issue text.