Create a virtual instrument for dilfridge temperature controller setup (pico + tcs + pid)

[HuangJunye]

Dilfridge temperature controller is not even a single instrument: temperature is read by PicoWatt resistance bridge, heater is controlled by Leiden Triple Current Source, PID control is implemented on computer.

Temperature controller should be a general class with different hardware driver. t_daemon talks to temperature controller driver, and in turn control the temperature. Dilfridge temperature controller should be a virtual instrument which can interact with the three components.