feat: add chart handling in pptx backend #2409
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This PR adds support for extracting chart data from PowerPoint presentations in the
docling/backend/mspowerpoint_backend.py
backend. The main enhancement is the introduction of a new method to handle charts, allowing the backend to capture chart metadata and series data alongside tables and images.Issue resolved by this Pull Request:
Resolves #2306
Linked Pull Request on docling-core:
docling-project/docling-core#401
Checklist: