Feature request: PDF outline / TOC sidebar

[zevision]

Hi, thank you for the great project!

Below is the functionality I am hoping for:

When opening a PDF that contains an outline (table of contents), show it in a sidebar (similar to standard PDF readers) for quick navigation.

This would make navigating long PDFs much easier, especially for studying slides or textbooks.

Expected behavior

• A collapsible outline sidebar
• Clicking an entry jumps to the corresponding page

Thanks!