Edited unbranded illustrative quadruped research platform

Copyright (c) 2016-2024 HangZhou YuShu TECHNOLOGY CO.,LTD. ("Unitree Robotics")
Source: https://github.com/unitreerobotics/unitree_mujoco
Commit: 1eb6642e3f3fdfb7fb13a9794fd6a2dd93ea0e7d
Original files: unitree_robots/go2/go2.xml and unitree_robots/go2/assets/*.obj
License: BSD 3-Clause; full terms in UNITREE-LICENSE.txt.
Modified: manufacturer and model lettering removed; branded shell regions physically excised and replaced with independently tessellated plain service panels; front badge made blank; assembled standing pose; mesh simplification; recentered coordinates; normalized Int16 WebGL conversion.
This edited visualization illustrates a research platform and does not identify a manufacturer-branded product or imply manufacturer endorsement.
Rebuild: blender --background --factory-startup --python scripts/prepare-go2.py