Compile GD library with AVIF support

[heyyo-droid]

GD supports new format AVIF, but it should be compiled.
It will be great if we could have it inside wodby PHP to benefit from a great compression image library.
https://php.watch/versions/8.1/gd-avif

[csandanov]

Thanks for the suggestion, support added

[heyyo-droid]

Thank you :-)