Add script to calculate handlebar inertia
Add script to calculate handlebar inertia

Script takes a protobuf log as input. The Kollmorgen actual torque is
converted from DAC values to N-m. The steer encoder count is converted
to an angular acceleration using a Savitzky-Golay filter with window
size 11 and polynomial order 3. The handlebar inertia is calculated from
a least-squares fit.

oliverlee/phobos,oliverlee/phobos,oliverlee/phobos,oliverlee/phobos