Added a AutoEnded function

This gets called when the auto action finishes running.  This lets us
reset state when the driver takes control.  It gets run before
HandleTeleop.

Change-Id: I2969d95ed623f9e45735c07da1dc6c504efae06b
diff --git a/aos/input/action_joystick_input.h b/aos/input/action_joystick_input.h
index 9936c98..87b980e 100644
--- a/aos/input/action_joystick_input.h
+++ b/aos/input/action_joystick_input.h
@@ -30,6 +30,8 @@
   }
 
  private:
+  // Handles anything that needs to be cleaned up when the auto action exits.
+  virtual void AutoEnded() {}
   // Handles any year specific superstructure code.
   virtual void HandleTeleop(const ::aos::input::driver_station::Data &data) = 0;
 
@@ -49,6 +51,10 @@
   // finish early), we will run teleop regardless of the mode.
   bool run_teleop_in_auto_ = false;
 
+  // Bool to track if auto was running the last cycle through.  This lets us
+  // call AutoEnded when the auto mode function stops.
+  bool auto_was_running_ = false;
+
   ::std::unique_ptr<DrivetrainInputReader> drivetrain_input_reader_;
   ::aos::common::actions::ActionQueue action_queue_;
 };