Change base orientation of frames in the rider

[tjstienstra]

In a feedback session Jason Moore mentioned that there are standards with biomechanical modeling on how to orient reference frames w.r.t. the body and that it would be better to follow those within BRiM even though the current orientation, which follows the bicycle convention, has other practical advantages. Overall, I agree with him on this point. The fix should not be to difficult as it is just a rotation about the X-axis of 180 degrees. However, special attention is required to make sure no mistakes also in the automatic parameterization are made.

[moorepants]

This is an example paper: https://doi.org/10.1016/S0021-9290(01)00222-6 with the coordinate systems. There is a part 2 also.

It may not be worth implementing, but should be considered (at a later date).

[moorepants]

There is this one too: https://doi.org/10.1016/j.jbiomech.2019.109533