curve/torque bar for configured curature based cars

[jchristman75]

Description

Enable the torque bar for curvature based cars.

Each car implementation must provide the parameter "curvature_limit" to activate the torque bar.

Example, for Ford, in carcontroller.py / __init__, set curvature_limit to Ford's limit of 0.02

  def __init__(self, dbc_names, CP, CP_SP):
    CarControllerBase.__init__(self, dbc_names, CP, CP_SP)

    self.params = Params()
    self.params.put("curvature_limit", float(0.02))  # Ford system max curvature