This PR creates a detailed model card for StructSplat, which:
- Adds the `image-to-3d` pipeline tag to make the model discoverable on the Hub.
- Links the model to the paper: [StructSplat: Generalizable 3D Gaussian Splatting from Uncalibrated Sparse Views](https://huggingface.co/papers/2606.28321).
- Provides links to the official project page and the GitHub repository.
- Includes setup and evaluation instructions from the original GitHub README.