Integrate Regensburg-Ulm Hand Model

[melund]

Add:

• [x] Documentation RUHM
• [x] Documentation for MoCap hand model
• [x] Configuration statements for RUHM
• [ ] Tests for RUHM models
• [ ] 3D model of RUHM hand

Fix:

• [x] Left/right symmetry
• [x] Interface for left hand

[melund]

@loopluc @Maxi90 I am back from holiday and I have taken the next step of refactoring the scaling of the hand.

I have moved the "prototype" scaling into the model parameters file. https://github.com/AnyBody/ammr/pull/473/commits/98f301ea1770d8aee843a0adcac79ad6b6e92ee6#diff-8ee106979cf91eb04a1abf35d5413894R1386-R1534

I made it a uniform scaling step. But I don't know what you think of that. Before it was only "streching" the model parameters to get the finger to the different sizes. I thought it caused finger5 too look a bit to wide. But that could just as well be a problem the bones and how they were pre-scaled.

The "scale" functions are now composed of two scale steps. See :

https://github.com/AnyBody/ammr/pull/473/commits/98f301ea1770d8aee843a0adcac79ad6b6e92ee6#diff-40064d3993c82b25eb915acc91fed240R109-R115

Next week I will tackle pre-scaling original bone files in a different way

[melund]

@loopluc/@Maxi90 I have update a ton of init wrap vectors. So now the model can load and run without warnings in AMS 7.2.3.

It is only at the case a relatively neutral position. So I still need to stress the model.

I have only worked on the version with the detailed muscles. I didn't see any benefit of maintaining several version now that AMS runs fast.