* The member details section is now called "Members", rather
than "Properties".
* The property table now displays appropriate table headings:
"Member", "Value", "Description".
* The "Value" column is not shown if none of the members have
a value.
Closes#22678
PR Close#23872
For classes, the tree of subclasses is rendered, recursively.
For interfaces, the descendants are separated into child interfaces, which
extend the interface, and classes, which implement the interface.
Closes#19306
This is to tidy up the `author-packagse`, which currently duplicates a
lot of the configuration in the main packages. We need to
DRY this up so that we don't fall foul of a change in one being missed in
the other.