gui: Bandwidth stream panel added to stream components
gui: spectrum stream: rename auto bandwidth to fittorgb

the goal of this toggle will be to activate fitToRGB VA

also improve display of center/bandwidth (unit)
gui: make the spectrum streams use the spectrum stream panel

in the future, it'd be better to not have different types of stream panels.
For now, put some "clever" code to select the right stream panel.

Also fix the stream display, to update when the bandwidth changes, and to
not rely on empty polynomial for the wavelength
semcomedi: fix resetDevice with fake driver

if it's a fake driver, don't reset the (fake) writer
cli: allow to change the actuators which are not directly children of the component

use case for spectrometer

also add delay after a move, hoping to prvent some problem with the closing of the futures (not sure it works)
spectrapro: fail when trying to move outside of the ranges

it was not so dangerous as the device seems to just silency clip the value, but better raise an assertion in such a case
gui: note about problem with assertion

still needs to be fixed