Move CLICpix2 Decoder into Corryvreckan sources
This MR replicates the data decoder for CLICpix2 from Peary into Corryvreckan. This avoid the dependency to Peary and allows to more easily deploy Corryvreckan.
Since I had to adapt the decoder to match the strict compiler warning rules enables in this repository, its functionality should be tested with at least one TOT+CNT and one TOT+TOA mode run.
@williamm could you test this?