GitLab

* Fix: Improve the bounding boxes implementation

Use write_png instead of PIL in test_draw_boxes()
Initialize txt_font only once

* Remove channels permutation in test_draw_boxes
Co-authored-by: Vasilis Vryniotis <datumbox@users.noreply.github.com>
Co-authored-by: Aditya Khursale <akhursale@nvidia.com>
Co-authored-by: Vasilis Vryniotis <datumbox@users.noreply.github.com>