examples(noitom): package under isaacteleop_examples

[jiwenc-nv]

Description

Part of #985. Stacked on #1040.

The three modules imported each other as top-level modules, and the README documented the consequence rather than fixing it — every Isaac Lab command carried PYTHONPATH=~/IsaacTeleop/examples/noitom:$PYTHONPATH. This moves the tree to the layout in examples/README.md and deletes the prefix.

The example gains its first pyproject.toml. isaaclab and gymnasium are deliberately not dependencies: noitom_tasks.py runs inside an Isaac Lab environment that already provides them, and neither installs from PyPI. The README now says to install into that interpreter, which is what replaces the PYTHONPATH prefix:

./isaaclab.sh -p -m pip install -e ~/IsaacTeleop/examples/noitom

and the callback becomes --external_callback isaacteleop_examples.noitom.noitom_tasks.register_tasks.

One import lived inside a function body, indented, so it needed catching separately from the module-level ones — worth knowing if you review the other trees.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update

Testing

x86_64 / Ubuntu, Python 3.12. Wheel ships the four modules under isaacteleop_examples/noitom/ with no namespace __init__.py. An AST sweep of the tree confirms no sibling resolves as a top-level import any more.

Not covered, and I cannot cover it: nothing here has a Noitom mocap suit or an Isaac Lab install. The dependency list is inferred from imports, and this example never had one before — a missing runtime dep would only show on the machine with the suit attached. Please run both README paths (the MCAP recording and the Isaac Lab teleop task) before merging.

Checklist

• I have read and understood the contribution guidelines
• I have run the linter and formatter with SKIP=check-copyright-year pre-commit run --all-files
• I have made corresponding changes to the documentation
• I have added tests that prove my fix/feature works (or explained why not)
• I have signed off all my commits (git commit -s) per the DCO

_{No tests: this is a move, and no CI has the hardware.}

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[ivany-nv]

Read the diff line by line: the only changes are four bare intra-example imports becoming relative, plus the new pyproject.toml and namespace __init__.py. No logic change.

Not installed by install_python_example(), so there is no install tree to check, and I have no Noitom hardware here — but the diff carries nothing runnable that the move could break.