Merge branch 'add-simple-assembler-geometry' of ssh://git.xfel.eu:10022/karaboDevices/calng into add-simple-assembler-geometry

Copied over from my hacky utils; have used these in my development Karabo
environment for a while. Devices here (and corresponding changes to manager)
sketch how I interpret our plan for the next step in online calibration
topology; manual geometry devices to be later supplanted by or supplemented with
something using encoders or such.

Merge branch 'add-simple-assembler-geometry' of ssh://git.xfel.eu:10022/karaboDevices/calng into add-simple-assembler-geometry

Merge branch 'add-jungfrau-device' of ssh://git.xfel.eu:10022/karaboDevices/calng into add-jungfrau-device

Assuming the detector sends appropriate data.gain values in fixed gain mode(s),
the GPU kernel can just run as normal. Constants will include three gain stages
- fixed gain is purely a constant retrieval parameter.

Merge branch 'add-agipd-device' of ssh://git.xfel.eu:10022/karaboDevices/calng into add-agipd-device

Assuming the detector sends appropriate data.gain values in fixed gain mode(s),
the GPU kernel can just run as normal. Constants will include three gain stages
- fixed gain is purely a constant retrieval parameter.

Merge branch 'add-jungfrau-device' of ssh://git.xfel.eu:10022/karaboDevices/calng into add-jungfrau-device