ENH: ConeNozzleInjection - added ability for the injector to move

The set of injectionMethods has been extended to include a new option:

    injectionMethod movingPoint;

The position is then read as a TimeFunction1 entry, e.g. for a 'table'
type:

    position        table
    (
        (0 (-0.009 0.0995 0))
        (1e-3 (0.009 0.0995 0))
    );

where the list corresponds to the tuples (time (position)), and the time
is relative to the start of injection (SOI)