Use high energy channels in posrec / desaturation

[JoranAngevaare]

Currently we have setup the High Energy channels as an independent stream (amplification x0.5 instead of x10). They would be very useful if we also use them for de-saturation and/or posrec.

Since the WFSim developers have setup the High Energy channels in the simulator, this is a wonderful change for a great project where one validates that using those channels, we can get better reconstruction.