Support additional command line parameters

Support configuration of the following command line parameters for the lepton-grabber:

--dbg_testmode1       Disable FFC on 1st lepton
--dbg_print           Enable debug prints
--dbg_ser_noavg       Disable averaging of serial data
--dbg_no_serial       Disable serial support

Edited Nov 22, 2018 by AJ Fite

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