Docs: Imagick

Hi there! First, I'm terrible at presenting myself for strangers :D I'm Erika Heidi, I work with PHP for quite some time and I have a special interest on image processing with GD and ImageMagick (Imagick). After many years playing with Imagick, it came to my attention that we still don't have actual comprehensive docs on this extension in the official documentation at php.net. I would like to contribute if possible, as I have a lot of interest in this extension and this would be a good reason to experiment more with it. So, as the manual recommends, I'm here presenting myself before anything :) cheers! - Erika Heidi