Add a script service to execute rendering transformations

#set ($targetSyntax = 'uniast/1.0')
#set ($restricted = "$!source.restricted" == 'true')
#set ($xdom = $services.rendering.parse($source.content, $source.syntax))
#set ($transformationContext = $services.rendering.createTransformationContext())
#set ($discard = $transformationContext.setId("BlockNote:${source.documentReference}"))
#set ($discard = $transformationContext.setXDOM($xdom))
#set ($discard = $transformationContext.setSyntax($source.syntax))
#set ($discard = $transformationContext.setTargetSyntax($targetSyntax))
#set ($discard = $transformationContext.setRestricted($restricted))
#set ($discard = $transformationContext.setTransformationNames(['macro']))
#set ($discard = $transformationContext.setContentDocument($source.documentReference))
#set ($discard = $services.rendering.transform($xdom, $transformationContext))
#set ($renderedContent = $services.rendering.render($xdom, $targetSyntax))