ADC/TDC matching in BCAL

[sdobbs]

The effect of NPEAKS=3 being enabled in the ADC should be studied, and the ADC/TDC matching in DBCALUnifiedHit_factory.cc should be reviewed. At minimum a maximum time allowed between the matched ADC and TDC times should probably be implemented.

See https://github.com/JeffersonLab/sim-recon/blob/master/src/libraries/START_COUNTER/DSCHit_factory.cc or https://github.com/JeffersonLab/sim-recon/blob/master/src/libraries/TAGGER/DTAGHHit_factory.cc for examples.