* Update to pyside6.7.1
* Fix Ruff
* Fix MyPy
* Update mypy job to also use PySide6 6.7.1
* Remove unused imports
* Add Description to class
* Ruff format
* Fix Warning in pagination.py
* Probably fix Pyside app test
* Rename CustomQPushButton to QPushButtonWrapper
also renamed custom_qbutton.py to qbutton_wrapper.py
* Fix text and RAW image handling
- Fix RAW images not being loaded correctly in the preview panel
- Fix trying to read size data from null images
- Refactor `os.stat` to `<Path object>.stat()`
- Remove unnecessary upper/lower conversions
- Improve encoding compatibility beyond UTF-8 when reading text files
- Code cleanup
* Use chardet for character encoding detection
- Add support for HEIC/HEIF image thumbnails and previews
- Replace dependency "pillow_avif_plugin" with "pi-heif"
- Remove unused dependencies in ts_cli.py
- Add thumbnail and preview support for RAW images ["raw", "dng", "rw2", "nef", "arw", "crw", "cr3"]
- Optimize the preview panel's dimension calculations (still need to move this elsewhere)
- Refactored use of "Path" in thumb_renderer.py
