CIO v3: Characterize the battery discharge curve

[acu192]

Fleet 2 has a new battery, so we need to run the battery discharge curve recorder script again. Once done, we can finish this function for computing the estimated time remaining.

Here is the previous generation's (fleet 1) implementation:

• https://github.com/MasterAI-Inc/libauto/blob/v2.x/cio/aa_controller_v2/battery_discharge_curve/Battery%20Discharge%20Curve.ipynb
• https://github.com/MasterAI-Inc/libauto/blob/v2.x/cio/aa_controller_v2/battery_discharge_curve/__init__.py