moved the state publisher from 2d nav launch to morse launch

In order for the user to follow the same procedure for launch files in simulation and with the real robot, me and @kunzel were discussing that the state publisher should be launched immediately when morse is called, so that it mirrors the scitos_bringup launch file. Hence, I moved the state publisher launch from the 2d nav to the morse launch.

Before this change, when I was testing the rumblepad based map saver in simulation for example, I always had to launch the state publisher in a different shell, which was an extra step when comparing with the launch procedure I do in the robot