Add functionality to automate data collection for arbitrary drive waveform

[ange1a-j14]

acquire_automatic.py is the program for automatic data collection, with options to toggle whether to plot data for each shot and whether to store data. One function handles running one shot, so the code is easily customizable for either solely collecting a customizable amount of data, or for debugging single shots.
acquire_continuous.py was the initial program used to get RP wave generation & scope trace collection through code working. The final version is the code used to retake calibration data using both the RP to drive the speaker with pure sine waves and measure PD response.
util.py contains useful functions for generating waveforms, converting from voltage to displacement or velocity, and writing data to an h5py file.
calibration_rp.ipynb contains the calibration fit on the data collected using acquire_continuous.py.

[npeard]

No obvious changes needed