Add ANYmal D description

[stephane-caron]

There is an issue loading this description in yourdfpy:

  ======================================================================
  ERROR: test_anymal_d_description (test_yourdfpy.TestYourdfpy)
  ----------------------------------------------------------------------
  Traceback (most recent call last):
    File "/home/runner/work/robot_descriptions.py/robot_descriptions.py/tests/loaders/test_yourdfpy.py", line 32, in test
      load_robot_description(description)
    File "/home/runner/work/robot_descriptions.py/robot_descriptions.py/.tox/loader-yourdfpy/lib/python3.9/site-packages/robot_descriptions/loaders/yourdfpy.py", line 45, in load_robot_description
      return yourdfpy.URDF.load(module.URDF_PATH, mesh_dir=module.PACKAGE_PATH)
    File "/home/runner/work/robot_descriptions.py/robot_descriptions.py/.tox/loader-yourdfpy/lib/python3.9/site-packages/yourdfpy/urdf.py", line 989, in load
      return URDF(robot=URDF._parse_robot(xml_element=xml_root), **kwargs)
    File "/home/runner/work/robot_descriptions.py/robot_descriptions.py/.tox/loader-yourdfpy/lib/python3.9/site-packages/yourdfpy/urdf.py", line 641, in __init__
      self._scene = self._create_scene(
    File "/home/runner/work/robot_descriptions.py/robot_descriptions.py/.tox/loader-yourdfpy/lib/python3.9/site-packages/yourdfpy/urdf.py", line 1335, in _create_scene
      self._add_geometries_to_scene(
    File "/home/runner/work/robot_descriptions.py/robot_descriptions.py/.tox/loader-yourdfpy/lib/python3.9/site-packages/yourdfpy/urdf.py", line 1269, in _add_geometries_to_scene
      new_s = self._geometry2trimeshscene(
    File "/home/runner/work/robot_descriptions.py/robot_descriptions.py/.tox/loader-yourdfpy/lib/python3.9/site-packages/yourdfpy/urdf.py", line 1240, in _geometry2trimeshscene
      new_s = new_s.scaled(geometry.mesh.scale)
    File "/home/runner/work/robot_descriptions.py/robot_descriptions.py/.tox/loader-yourdfpy/lib/python3.9/site-packages/trimesh/scene/scene.py", line 1084, in scaled
      geometry = geometries[group[0]]
  IndexError: index 0 is out of bounds for axis 0 with size 0

[coveralls]

Pull Request Test Coverage Report for Build 10078481974

Details

• 6 of 6 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.02%) to 97.556%

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Totals
Change from base Build 10078467442:	0.02%
Covered Lines:	918
Relevant Lines:	941

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💛 - Coveralls