When the target of an autonumbered link is changed to a URL, it's kept
as an autonumbered link and its target is updated. When the target is
changed to a MediaWiki page, the autonumbered link is removed and
replaced with an internal link with the text set to the target.
So for instance, if you inspect [http://www.example.com] and change
its target to "Foo", the result will be [[Foo]].
The core of this commit adds support for inspecting nodes to
ve.ui.LinkInspector. This support should probably move into a
class in between AnnotationInspector and LinkInspector, perhaps
called HybridInspector or something, but I'm deferring that for now.
LinkInspector allows changes to inspected nodes to be reflected either
as attribute changes on the node, or by replacing the node with something
else. MWLinkInspector uses this feature to replace the autonumbered
external link node with an internal link annotation when the target is
set to an external link.
Bug: 53505
Change-Id: Icb404af84c24574438e4de3ef05bbd1993b593f7
