Improve experimental & data reproducibility

[cjsha]

Save file with configuration properties at the time that the workflow was started that is decoupled from the .bonsai file. This allows users to know what parameters were used during a given data acquisition session even if the bonsai workflow changes.

Hardware timestamp when a stimulation is triggered. Users also need a way to know the shape of the stimulation waveform each time a stimulus is triggered. I think the best way is to output the stimulation waveform parameters and save them to a .csv every time stimulation is triggered.

[cjsha]

I converted this into two disparate issues (#384 #385) with more details instead of trying to address both in this one issue: