BepuPhysics: Inertia Tensor-Based Rotation Lock in 2D Physics

[VaclavElias]

Is your feature request related to a problem? Please describe.
Comment from Norbo:

One point to consider: if you're using the inertia tensor-based rotation lock, you can bypass the need for orientation/angular velocity control. When an object has an infinite moment of inertia around a specific axis, no dynamic forces will be able to generate any angular velocity along that axis.

Original note: you can do away with the orientation/angular velocity control if using the inertia tensor based rotation lock; no dynamic forces will manage to give a body nonzero angular velocity around an axis with an infinite moment of inertia

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Additional context
2D improvements