Add task category, link to paper

This PR adds the `image-to-3d` task category and links the dataset card to the paper, at https://huggingface.co/papers/2411.14384.

README.md

@@ -1,3 +1,7 @@
----
-license: mit
----
+---
+license: mit
+task_categories:
+- image-to-3d
+---
+
+This dataset contains the data used in the paper [Baking Gaussian Splatting into Diffusion Denoiser for Fast and Scalable Single-stage Image-to-3D Generation and Reconstruction](https://huggingface.co/papers/2411.14384).