Add functionality to bypass arbitrary detectors

This issue relates to completing the engineering work done to implement an MVP for a bypass pipeline branch.

Bypass enables the pipeline to take in arbitrary detector streams and compute their SNR, but are ignored or "bypassed" during the postcoh.c pipeline module. This means that detectors with a high frequency of glitches can be bypassed so that they do not affect the downstream coherence code. However, we still generate their data and have relevant information in the final table.