Add image-to-image pipeline tag

This PR adds the `image-to-image` pipeline tag to the model card metadata, ensuring the model can be found at https://huggingface.co/models?pipeline_tag=image-to-image.

README.md

@@ -1,14 +1,16 @@
 ---
-license: other
-license_name: flux.1-dev-non-commercial-license
-license_link: LICENSE
+base_model:
+- black-forest-labs/FLUX.1-dev
 datasets:
 - Boese0601/ByteMorph-Bench
 language:
 - en
-base_model:
-- black-forest-labs/FLUX.1-dev
+license: other
+license_name: flux.1-dev-non-commercial-license
+license_link: LICENSE
+pipeline_tag: image-to-image
 ---
+
 [![Paper](https://img.shields.io/badge/%20arXiv-Paper-red)](https://arxiv.org/abs/2506.03107)
 [![Project-Page](https://img.shields.io/badge/%20Project-Website-blue)](https://boese0601.github.io/bytemorph/)
 [![Benchmaek](https://img.shields.io/badge/🤗%20Huggingface-Benchmark-yellow)](https://huggingface.co/datasets/ByteDance-Seed/BM-Bench)