### What problem does this PR solve?
Fix: paddle ocr missing outlines #13422
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
This PR adds support to PaddleOCR-VL-1.5 interface to the PaddleOCR PDF
Parser.
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
1. PaddleOCR PDF parser supports thumnails and positions.
2. Add FAQ documentation for PaddleOCR PDF parser.
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Add PaddleOCR as a new PDF parser.
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
