Update python loader.

* panda urdf with collisions

* adding the hand to the urdf

* loader with capsule transformation

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* fingers as capsules

* hand as capsule

* panda urdf with collisions

* adding the hand to the urdf

* loader with capsule transformation

* fingers as capsules

* hand as capsule

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* changing the heritage of pandaloadercollision

* Update python/example_robot_data/robots_loader.py

Co-authored-by: Guilhem Saurel <guilhem.saurel@laas.fr>

* fixing srdf path name

* Update python/example_robot_data/robots_loader.py

Co-authored-by: Guilhem Saurel <guilhem.saurel@laas.fr>

* getting rid of redundancy with the super

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* moving the static method generate_capsule_name to robot loader main class

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* adding unittest for panda collision

* fixing name of unittest

* deleting extra _ between the name of the link & capsule

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* Address comment in #242

* More sensible entry order

* Fix type error

* tests: reorder

* Update python/example_robot_data/robots_loader.py

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Guilhem Saurel <guilhem.saurel@laas.fr>
Co-authored-by: Fabian Damken <fabian.damken@stud.tu-darmstadt.de>

* alex description added

* modified meshes - size reduced - readme and license added

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* Add go2 description

---------

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before:
```
8.9M robots/asr_twodof_description/qb_meshes/dae/qbmove_frame_m.dae
7.2M robots/baxter_description/meshes/electric_gripper/electric_gripper_w_fingers.DAE
4.9M robots/baxter_description/meshes/torso/base_link.DAE
 88M robots/go1_description/meshes/trunk.dae
```

after:
```
1.7M robots/asr_twodof_description/qb_meshes/dae/qbmove_frame_m.dae
2.2M robots/baxter_description/meshes/electric_gripper/electric_gripper_w_fingers.DAE
2.6M robots/baxter_description/meshes/torso/base_link.DAE
 28M robots/go1_description/meshes/trunk.dae
```

for more information, see https://pre-commit.ci

for more information, see https://pre-commit.ci