refactor: rename color conversion methods for clarity and consistency

PHP 8.4 supports (#11)

* php 8.4 supports

* fix workflow

fix: throw an Exception when GD can't decode the image data (#8)

* fix: throw an Exception when GD can't decode the image data

This throws a more descriptive exception when GD fails to decode the image, which is likely to be because GD doesn't have support for that image type. Before, it would just fail on the subsequent call to imagesx().

* Tests

---------

Co-authored-by: Eser DENIZ <[email protected]>

Added extract_size_and_pixels_with_imagick_pixel_iterator helper

changelog.md

readme.md