sensorless AO feedback in std out not status bar.

[iandobbie]

We should put the progress feedback from the sensorless AO optimisation into the status bar not just printed into the stdout.

[carandraug]

To do this, the code needs to first register a "light" name by emitting an event with an empty message. Like so:

AO_LIGHT_NAME = "sensorless AO feedback"
cockpit.events.publish(cockpit.events.UPDATE_STATUS_LIGHT, AO_LIGHT_NAME, "")

From then on, there will a field of the status bar that will display messages from that:

cockpit.events.publish(cockpit.events.UPDATE_STATUS_LIGHT, AO_LIGHT_NAME, "some update")

Any message will colour the status bar. When it is done, it should send an empty message so that the status bar reverts back to background colour:

cockpit.events.publish(cockpit.events.UPDATE_STATUS_LIGHT, AO_LIGHT_NAME, "")

[carandraug]

Since this work has been merged into the microscope-aotools package instead, I have migrated the issue to this repo.