Prevent Transitioning to dangerous states.

[EUdds]

What do you want to change?
Unlike issue #10 where this would prevent transitions from safe states to not safe states. This would prevent transitioning to states that would cause damage to the pod. For example, transitioning directly from propulsion to idle.

Why make that change?
This will prevent confusion between the dashboard and the controls side of things.

Describe alternatives you've considered
Controls should already prevent this, but this way is visualized on the dashboard.