Set position only once

[johanos1]

Feature

When creating a space craft with an orbit, the same position must be set twice. It should be enough to set it only once.

Desired Behavior / Functionality

No need to set the same position for an actor twice.

What Needs to Be Done

Create a set_position function in the ActorBuilder to not require a position in get_actor_scaffold

How Can It Be Tested

Update the tests using the set_position function and make sure they pass.