Calibration channel name convention with the new sgn-cal infrastructure

In the existing calibration pipeline, the online channels are named starting with "GDS" and the offline ones begin with "DCS," which are associated with computing systems. With the new Arrakis system and sgn-cal infrastructure, these legacy naming conventions might need to change; more informative names might need to be considered. This issue tracker is to keep a record of this and can be linked to a more suitable place for relevant discussions.