Img2table

Features
- Complete overhaul of the line detection algorithm to improve detection of lines defined by background color changes
- Improvement in detection of semi-bordered cells
- Update detection of rows in borderless tables
- Add support for Surya OCR
- Add detection of implicit columns via the <code>implicit_columns</code> parameter
- Optimization of code performance via numba refactoring
- Update of examples notebooks
Bug fixes
- Fix bug with text position when extracting text from rotated PDFs

* Simpler and more consistent line detection
* Detection of discontinuous columns in borderless tables

- Fix miscellaneous code left from legacy processing
- Add margin to top/bottom of borderless tables

What's Changed
* Update metrics computation and borderless table detection
* Add compatibility with Python 3.12
* Add support for documents with black backgrounds

- Fix division by zero bug introduced in previous release

- Fix bugs
- Improve computation of image metrics on noisy documents
- Modify row detection for borderless tables in order to account for merged cells
- Implement Adaptive Run Length Smoothing Algorithm in order to isolate text areas in images