Improve dataset card: add paper link, code link, and metadata

Hi! I'm Niels from the Hugging Face community science team.

I noticed this dataset is part of the "CroSTAta" paper but isn't yet fully documented on the Hub. This PR improves the dataset card by:
- Adding the `robotics` task category and relevant tags (`lerobot`, `mani-skill`) to the metadata.
- Adding links to the paper on Hugging Face and the source code on GitHub.
- Including a link to the model checkpoints provided by the authors.
- Adding the BibTeX citation for researchers to cite your work.

Linking the dataset to its paper and code helps researchers find and use your work more easily!

README.md

@@ -1,6 +1,17 @@
+---
+task_categories:
+- robotics
+tags:
+- lerobot
+- mani-skill
+---
+
 # StackCube-v1 Dataset
 
-This dataset was converted from ManiSkill format to LeRobot format.
+This dataset was converted from ManiSkill format to LeRobot format for the paper [CroSTAta: Cross-State Transition Attention Transformer for Robotic Manipulation](https://huggingface.co/papers/2510.00726).
+
+- **Code:** [https://github.com/iit-DLSLab/croSTAta](https://github.com/iit-DLSLab/croSTAta)
+- **Checkpoints:** [CroSTAta Evaluation Checkpoints](https://huggingface.co/johnMinelli/CroSTAta_evaluation_checkpoints)
 
 ## Dataset Information
 - Environment: StackCube-v1
@@ -11,6 +22,7 @@ This dataset was converted from ManiSkill format to LeRobot format.
 - Target Control Mode: Original
 
 ## Original ManiSkill Metadata
+```json
 {
   "env_id": "StackCube-v1",
   "env_kwargs": {
@@ -21,3 +33,13 @@ This dataset was converted from ManiSkill format to LeRobot format.
   },
   "max_episode_steps": 100
 }
+```
+
+## Citation
+```bibtex
+@article{minelli2025crostata,
+  title={CroSTAta: Cross-State Transition Attention Transformer for Robotic Manipulation},
+  author={Minelli, Giovanni and Turrisi, Giulio and Barasuol, Victor and Semini, Claudio},
+  year={2025}
+}
+```