createTemperatureLookupMarlin.py: Add resolution comments and format for...

createTemperatureLookupMarlin.py: Add resolution comments and format for Marlin.

This formats the output more like the thermistortables.h output, replacing the hard-coded *16 oversampling with *OVERSAMPLENR.  This might make it easier to calibrate some table to your actual pullup resistor, thermistor, and measured temperatures.

It also adds per-line comments detailing the resistance, voltage, and resolution of the thermistor in degreeC/count.  The resolution data might help those that might want to tune the pullup resistor to tradeoff resolution for accuracy in a region of interest.