driver tlaptmf: add info about mff operparam message

The latest Thorlabs documentation (v12) now documents this message.
Should be handy if we need to report/change the speed.
acq align: more info in case it fails

also fix a small bug to really skip the outliers in max diff.

something might still be fishy in the computation in max diff...
driver andorcam3: add translation VA

the newer SDK and hardware supports ROI anywhere on the sensor.
Let's allow the user to change the center of the ROI with the .translation VA.

Works mainly the same as for the SEM, expected it must be ints.

Also add support for the transpose options in DigitalCamera, and a test case.

Untested on real hardware.... but should probably not have any effect as long as
it's not changed at least.

Will be used by the bleaching script.
driver semcomedi: tranlation unit is px