This allows keyboard input to be sent to it, thus supporting passphrase
input using a physical keyboard.
Additionally, don't show the focus ring on the only element.
They will, at some point, be promoted into LVGUI. For the time being
they are local as they have only been verified to work in a useful
manner for this limited use case.
The splash is now an application that should be started and forked from.
Once started, it will listen for messages on a ZeroMQ socket reporting
progress.
The current protocol is extremely simple, reporting (optional) label,
and reporting a progress amount.
Additionally, it responds to a string commant ("quit") to quit as
needed.
