Add dataset card with task category and link to Github repo

This PR adds a dataset card, specifies the `image-segmentation` task category, and links to the Github repository for the project.

README.md

@@ -0,0 +1,8 @@
+---
+task_categories:
+- image-segmentation
+---
+
+This repository contains datasets used in the paper "SALT: Parameter-Efficient Fine-Tuning via Singular Value Adaptation with Low-Rank Transformation" for medical image segmentation.
+
+Github: https://github.com/YourUsername/SALT