Add SPLIT_PAGE_CONTENT_ONLY output mode to HTML export

[bharathk01]

Feature Request: Add SPLIT_PAGE_CONTENT_ONLY output mode to HTML export

I'm requesting an enhancement to the HTML export functionality in docling_core. Currently, the split page view (SPLIT_PAGE) outputs each page as a table row, with an image and content. For some use cases, table structure and images are unnecessary, and it would be useful to have page-wise content separated in <div class='page'> blocks, each with a data-page attribute for page numbering, but without images or table markup.

Proposed solution:

• Add a new output style (SPLIT_PAGE_CONTENT_ONLY) to the HTMLOutputStyle enum.
• In the HTMLDocSerializer.serialize_doc method, implement a block that:
  • Splits the document per page (like current split logic),
  • Outputs each page as <div class='page' data-page='N'>...</div> (where N is the page number),
  • Does not include images or table structure.

This would allow users to directly export clean, page-wise HTML content for further web embedding or processing.

Suggested code changes:

• Extend the HTMLOutputStyle enum.
• Add corresponding logic in the serializer as outlined above.

Thank you!