Add maneuverability criterion - generate new traj

[avikde]

Follow on from #86

• Open loop stable trajs. Accelerating stroke
• Force added = k x0 so stiffness affects how much more force is needed for maneuverability
• Address the issue of the initial output traj affecting the param opt -- see Debug scaled up trajectories - getting "resonance" #103 for the differences between the "scaled up" and "robobee scale" initial param-generated trajs

Concrete:

• use a traj with low and high stroke amplitude (changing wing thrust) such that the passive hinge stays at a good hinge angle.
• compare design with hover and maneuverability - hopefully there is some difference