Introduce a Scroll Children Display macro compatible with Scroll Pagetitles

Currently the native Confluence Children Display macro will output only the standard Confluence child page titles included in the page tree.

However, in some use cases it would be beneficial to be able to view the page titles that are provided from the Scroll Pagetitle macro instead. This would give users more control to display a list of links to the child pages with the names that they would like to see and not the list of names they are required to view because of the duplicate page title rule in a space.

This macro would then show the page titles from the Scroll Pagetitle macro on the Confluence page as well as when exported.