The feature request in our backlog for the next release.
It's time to have this build in gd as default!
At this point you can try developing it as your module using Plesk SDK at http://www.parallels.com/download/plesk/11.5/documentation/
Thank you for your input! We will consider this functionality in upcoming releases if it will be popular.
Everyone, please continue voting for this feature if you consider it important.