Add collision approximation choices convert_mesh.py

[virgilio96upm]

Add missing collision approximation choices

Description

Add some missing collision approximation options in convert_mesh.py file. Some collision approximation options were missing in the code, but the MeshConverterCfg class has them as possible options

IsaacLab/source/standalone/tools/convert_mesh.py

Line 60 in 21173c3

choices=["convexDecomposition", "convexHull", "none"],

IsaacLab/source/extensions/omni.isaac.lab/omni/isaac/lab/sim/converters/mesh_converter_cfg.py

Lines 39 to 41 in 21173c3

	Valid options are:
	"convexDecomposition", "convexHull", "boundingCube",
	"boundingSphere", "meshSimplification", or "none"

Fixes #1713 (comment)

Type of change

• New feature (non-breaking change which adds functionality)

Checklist

• I have run the pre-commit checks with ./isaaclab.sh --format
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• I have updated the changelog and the corresponding version in the extension's config/extension.toml file
• I have added my name to the CONTRIBUTORS.md or my name already exists there