Add initial dataset card for ZonUI-3B dataset

This PR adds the initial dataset card for the dataset used in the paper [ZonUI-3B: A Lightweight Vision-Language Model for Cross-Resolution GUI Grounding](https://huggingface.co/papers/2506.23491). It includes:
- The `image-text-to-text` task category.
- Relevant tags such as `gui`, `grounding`, `multimodal`, `vision-language-model`, and `cross-resolution`.
- The `language` as `en` and `size_categories` to `10K<n<100K`.
- A description of the dataset's purpose and characteristics.

README.md

@@ -0,0 +1,18 @@
+---
+task_categories:
+- image-text-to-text
+language:
+- en
+tags:
+- gui
+- grounding
+- vision-language-model
+- multimodal
+- cross-resolution
+size_categories:
+- 10K<n<100K
+---
+
+This repository contains the cross-platform, multi-resolution dataset of 24K examples, specifically designed for Graphical User Interface (GUI) grounding tasks, as introduced in the paper [ZonUI-3B: A Lightweight Vision-Language Model for Cross-Resolution GUI Grounding](https://huggingface.co/papers/2506.23491).
+
+The dataset comprises examples from diverse sources, including mobile, desktop, and web GUI screenshots, aiming to effectively address data scarcity in high-resolution desktop environments. It was utilized for training and evaluating Vision-Language Models like ZonUI-3B.