DAQMX: support thermocouple channel type

[FreddieAkeroyd]

The DAQMX ioc needs to support thermocouple channel types for PEARL. This is needed by #6049

[FreddieAkeroyd]

There are currently some hardcoded values for a PEARL test, check these are right. Can make them configurable later.

       pPvt->aioPvt[i]->units = DAQmx_Val_Kelvins;
       pPvt->aioPvt[i]->thermocoupleType = DAQmx_Val_K_Type_TC;
       pPvt->aioPvt[i]->cjcSource = DAQmx_Val_ConstVal;
       pPvt->aioPvt[i]->cjcVal = 25.0;

The mix/max look to be changed from the VI but these are already specifiable in the driver. You basically:

• create an acquisition of type "AITC"
• specify min and max temperature values as if there were voltages passed to a "AI" type channel

[FreddieAkeroyd]

m/M are for min and max value, you should now be able to do something like U=Kelvins m=0 M=100 thermocoupleType=K_Type_TC cjcSource=ConstVal cjcVal=25.0 AIADCTimingMode=HighResolution AIAutoZeroMode=Once

[FreddieAkeroyd]

@davidkeymer maybe be best to review as can confirm it works