# Description

This PR adds a demo that showcasing the advance usage of
RigidObjectCollection.
This shows spawning random number of objects and varying object types
per reset with a bin packing example.

## Type of change

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

## Screenshots

![bin_packing](https://github.com/user-attachments/assets/196ff820-4973-45a5-8044-3057bbc60bfe)

## Checklist

- [x] I have read and understood the [contribution
guidelines](https://isaac-sim.github.io/IsaacLab/main/source/refs/contributing.html)
- [x] I have run the [`pre-commit` checks](https://pre-commit.com/) with
`./isaaclab.sh --format`
- [x] I have made corresponding changes to the documentation
- [x] 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
- [x] I have added my name to the `CONTRIBUTORS.md` or my name already
exists there

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Signed-off-by: ooctipus <zhengyuz@nvidia.com>
Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>
Co-authored-by: Kelly Guo <kellyg@nvidia.com>