Fix Gamma calibration in Bonsai workflows

[jeromelecoq]

[jeromelecoq]

Currently working on this piece here : https://github.com/AllenNeuralDynamics/openscope-community-predictive-processing/tree/feature/gamma/code/GammaCalibration

We get the screen to ramp and are now working to collect photodiode values.

[jeromelecoq]

added documentation here : https://allenneuraldynamics.github.io/openscope-community-predictive-processing/stimuli/gamma-calibration/#

Our code works. We are iterating the gamma recording circuit.