Add Apollo 15 Lunar Roving Vehicle

[JasperGrant]

Feature description

While existing lunar simulations heavily feature theoretical future lunar rovers, there is as a notable absence of actual rovers with flight heritage. The Lunar Roving Vehicle (LRV) is a rover used in the Apollo missions with very well documented dimensions and dynamics, designed for use on the moon. By simulating this existing vehicle, we can test novel rover features on a testbed proven practical for lunar application.

Implementation considerations

A mesh of the LRV along with correct dimensions and dynamics will be implemented as an SDF model paired with DAE meshes. This model will be controllable in an Apollo 15 Landing site environment with a proportional controller using an Ackermann steering mechanism. The system will feature odometry, an IMU, two cameras, and special care given to realism in both the LRV model and Apollo 15 Landing site.