modules/rkt: add EDITSCENE state akin to NEWSCENE

Now you can seed the scene editing with a top-level serialized
scene in "as_arg" form, just like NEWSCENE.

The current scene being edited is shown in serialized form for
convenient copy & paste into an editor for manipulation, between
the []s both to also show what the default seed will be if you
just press enter.  When using the copy & paste w/editor approach,
you'd just paste the tweaked form directly into the waiting
prompt before hitting <enter>.

Regardless of what happens at the initial EDITSCENE prompt, the
current implementation always goes through an interactive
visiting of all the settings.  Simply pressing enter at those
individual settings will accept their current value from the
serialized seed, or a default if not present in the settings.

0 files changed, 0 insertions, 0 deletions