Stanley control
Path tracking simulation with Stanley steering control and PID speed control.

Code Link
- PathTracking.stanley_control.stanley_control.stanley_control(state, cx, cy, cyaw, last_target_idx)
Stanley steering control.
- Parameters:
state – (State object)
cx – ([float])
cy – ([float])
cyaw – ([float])
last_target_idx – (int)
- Returns:
(float, int)