This PR improves the dataset card by:
- Linking it to the corresponding research paper: [PhysX-Omni: Unified Simulation-Ready Physical 3D Generation for Rigid, Deformable, and Articulated Objects](https://huggingface.co/papers/2605.21572).
- Adding links to the [official GitHub repository](https://github.com/physx-omni/PhysX-Omni) and [project page](https://physx-omni.github.io).
- Including the BibTeX citation for the work.
- Refining the metadata tags to better categorize the dataset.