Add the following workflows for GPU vs CPU validation
- 0.503: pixel-only (quadruplets)
- 0.507: pixel-only (triplets)
- 0.513: ECAL-only
- 0.523: HCAL-only
These workflows should be based on the corresponding GPU ones, but consume both CPU and GPU collections.
When a DQM-based comparison is available, it should be included.