[orca-list] Quick key for clickables?

[Joanmarie Diggs <jdiggs igalia com>]

Hey all.

I want to add support in Orca for clickables (objects that have an
onClick action associated with them). Because these are often not Tab
focusable, I think a quick key (aka structural navigation key) would be
helpful. The options I see are:

* Add it to K (which would then navigate to all links and clickables)
* Get rid of A (which is for "anchors" but largely useless) and have A
  be the quick key for things with "actions" (currently just clickables)
* Your other alternative here

Thoughts?
--joanie