Add noise subtraction channels

This MR adds channels to the channel list that were recently added (see this FRS ticket) to record the individual noise contributions to DARM from different noise sources as estimated by the NonSENS algorithm. These noise estimates are subtracted from GDS-CALIB_STRAIN to create GDS-CALIB_STRAIN_CLEAN. Therefore these channels are unsafe if analyzing GDS-CALIB_STRAIN but are safe when analyzing GDS-CALIB_STRAIN_CLEAN.