Used Gemini to convert the C++ tests in wpimath/.../kinematics to
pytest. For ease of use required a better constructor for
`MecanumDriveWheelPositions`
I did this conversion months ago (before robotpy landed and before the
reorg), so new tests might be missing. At least its better than nothing
🤷
Broke the huge pr that does almost everything into parts so its easier
to review.
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Co-authored-by: David Vo <auscompgeek@users.noreply.github.com>
