Added newton based teleop scripts in the newton-teleop folder

[RijulChaddha9504]

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[wilsonchenghy]

@copilot what is the difference between mjlab and newton one in here? different simulation engine within? or just use newton for sth

[Copilot]

@copilot what is the difference between mjlab and newton one in here? different simulation engine within? or just use newton for sth

mjlabs here is the original MuJoCo-only teleop path (mjlabs_keyboard_teleop.py) using mjviser.

The newton script is a separate teleop path where the physics simulation runs in NVIDIA Warp + Newton (XPBD), with viser as the viewer. MuJoCo is still imported there, but only for IK/Jacobian math (not for physics stepping).

So yes—there are two simulation-engine paths in this PR: MuJoCo fallback vs Newton/Warp path.