body: add fuelGauge to body carState (#24386)

selfdrive/car/body/carstate.py

@@ -20,6 +20,8 @@ class CarState(CarStateBase):
     ret.steerFaultPermanent = any([cp.vl['VAR_VALUES']['MOTOR_ERR_L'], cp.vl['VAR_VALUES']['MOTOR_ERR_R'],
                                    cp.vl['VAR_VALUES']['FAULT']])
 
+    ret.fuelGauge = cp.vl["BODY_DATA"]["BATT_PERCENTAGE"] / 100
+
     # irrelevant for non-car
     ret.gearShifter = car.CarState.GearShifter.drive
     ret.cruiseState.enabled = True

selfdrive/test/process_replay/ref_commit

@@ -1 +1 @@
-d17ecea1f071007193a8a1e1ececf78c96b9deac
+9385014c512d253655f574d77fe1e07558f4157d