Implement HV tests on the active board

Random changes

• Use unordered_map instead of map for storing AMACv2 fields
• Add PBv3Utils.cpp with help functions
• Move getTimeAsString to PBv3Utils
• Add PBv3Utils::printResults as an attempt to pretty print JSON results in a nice table
• Make sure all "test starts" messages include the time for consistency
• Add loglevel declaration to programs that don't already have it
• Transition pbv3_active_calibrate to use a channel instead of a power supply object
• Enable HV tests in basic_test and mass_test
• Fix units in LV_ENABLE test

labRemote Update

• labRemote now uses the new ICom interface. The equipment configuration files need to be updated correspondingly.
• Added a few DevCom devices necessary for HV tests

pbv3_mass_test Updates

• Clarify the help string in some processes.
• Automatically generated serial numbers now look like serial numbers.
• Use incrDebug on -d to allow incrementing debug level higher
• Turn off power supplies at beginning of test to make sure we start in a "clean state"
• Enable HV tests.

High Voltage Testing

• Rename PBv3TB::getHVout to PBv3TB::getHVoutCurrent as we can only measure current on the active board.
• Add devices necessary for HV tests to PBv3TBMassive
• Add output current field to HV_ENABLE test
• HV_ENABLE test steps through voltages instead of currents
• Add AMAC HVret check to HV_ENABLE
• HV_ENABLE pass/fail is based on change in current after HVmux toggle to allow for a failed (open) HVmux on the panel.
• HV_ENABLE pass/fail also now included a check of the AMAC HVret reading
• HVSENSE steps through voltages instead of currents
• Add HVIOUT field to HVSENSE measurement