Dev: rework ImageMagickHandler to use imagick extension

[kenjis]

CodeIgniter4/system/Images/Handlers/ImageMagickHandler.php

Line 22 in 6f4b407

* FIXME - This needs conversion & unit testing, to use the imagick extension

References

• ImageMagick Handler is extremely slow. #6149
• Bug: ImageMagickHandler throws exception without imagick extension #6297

[element-code]

+1

[lonnieezell]

Very stale. Closing.