Campaign 2: full chain

[brettviren]

Full-chain campaign: Goal, run both OSP and SPNG in art/larsoft as part of a full chain of simulation and signal processing using PDHD cosmic muons. Include processing to compare OSP and SPNG output to produce files of metrics or even also final plots.

Many things still to flesh out but some items:

• Either target a job that includes cosmic muon generators or pre-calculate them and input a file.
• Run G4, WCT sim and OSP and SPNG as parallel branches. sim+OSP and sim+SPNG should be in same job as this is what DUNE does nominally. May factor G4 out to its own job and write depo files. May include sim+OSP and sim+SPNG in same job split into two jobs (redundantly running sim).
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