This PR significantly enhances the dataset card for the `GTA5subset` by:
- Adding the `image-segmentation` task category to the metadata.
- Including relevant `tags` such as `domain-adaptation`, `synthetic-data`, and `zero-shot`.
- Specifying the correct license as `cc-by-nc-sa-4.0` in the metadata, consistent with the original source.
- Linking the dataset to its associated paper [Zero Shot Domain Adaptive Semantic Segmentation by Synthetic Data Generation and Progressive Adaptation](https://huggingface.co/papers/2508.03300) and including its abstract.
- Providing a link to the official GitHub code repository: [https://github.com/roujin/SDGPA](https://github.com/roujin/SDGPA).
- Adding a detailed "Dataset Structure and Usage" section, including a snippet from the GitHub README on how to organize the data for use with the paper's code.
- Including the full license details and the BibTeX citation for proper attribution.
These changes greatly improve the discoverability, c…
