Added component configurations for new wrist and hand

[ale-git]

I've added component configurations (new Mk 3 hand and Mk 2 wrist at present) to icub-models.

Short recap:

• we have added a components folder to https://github.com/robotology/icub-models-generator that contains parts not yet mounted on complete robots, such as the new 4 finger hand and the parallel wrist
• the URDF models are generated as usual, and copied to icub-models with their related configuration files in the robots folder
• differently from the robot models, only one gazebo version is generated in icub-models for those components, and so the model.config generation must be treated in a different way - basically it only needs to update the model version, and thus:
• the CONFIGURED_MODELS list contains the components that not requires further configuration of the model.config apart from the version.

[traversaro]

I've added component configurations (new Mk 3 hand and Mk 2 wrist at present) to icub-models as discussed here

icub-tech-iit/fix#838 (comment)

Hi @ale-git ! I am afraid that not every icub-models user have access to that private repo, can you provide a recap in this PR description? Thanks!