Improve model card with metadata and project link

This PR adds the necessary metadata to the model card, including the `license`, `pipeline_tag`, and `library_name`. It also ensures a link to the project page is present. This improves discoverability and usability of the model on the Hugging Face Hub.

README.md

@@ -1,3 +1,8 @@
+---
+license: other
+pipeline_tag: image-text-to-text
+library_name: transformers
+---
 
 <div align=center>
   <img src="assets/teaser.jpg" width=800 >
@@ -403,4 +408,4 @@ ChatRex is licensed under the IDEA License 1.0, Copyright (c) IDEA. All Rights R
       primaryClass={cs.CV},
       url={https://arxiv.org/abs/2503.08507}, 
 }
-```
+```