Allow other central bodies

[gomezzz]

Feature

Desired Behavior / Functionality

Currently only the Earth is available as a hard-coded central body. We'll need more flexibility :)

What Needs to Be Done

• Implement other central bodies in actors https://github.com/aidotse/PASEOS/blob/8b19aee132d42e91b0d7c34ad2c13ff4c46f7940/paseos/actors/base_actor.py#L32
• Allow more complex line of sight computation. E.g. we can use meshes for the bodies and have a line - mesh intersection like this https://en.wikipedia.org/wiki/M%C3%B6ller%E2%80%93Trumbore_intersection_algorithm
• Think about how we implement rotating bodies properly

How Can It Be Tested

• New tests! :v:

[gomezzz]

Maybe interesting to make this show how to integrate orekit, similar to

https://gitlab.orekit.org/orekit-labs/python-wrapper/-/blob/master/examples/Propagation.ipynb or https://gitlab.orekit.org/orekit-labs/python-wrapper/-/blob/master/examples/Example_numerical_prop.ipynb

Also might make sense to make a dynamics subfolder since this part is getting complex