Add pipeline tag to metadata

This PR improves the metadata of the model card by adding the `image-to-image` pipeline tag. This helps users discover your tokenizer when filtering by tasks on the Hugging Face Hub.

README.md

@@ -1,13 +1,14 @@
 ---
+datasets:
+- ILSVRC/imagenet-1k
 license: apache-2.0
+pipeline_tag: image-to-image
 tags:
-  - GEAR
-  - tokenizer
-  - VQGAN
-  - image-generation
-  - autoregressive
-datasets:
-  - ILSVRC/imagenet-1k
+- GEAR
+- tokenizer
+- VQGAN
+- image-generation
+- autoregressive
 ---
 
 # Warmup-VQ
@@ -137,4 +138,4 @@ Built on [LlamaGen](https://github.com/FoundationVision/LlamaGen),
 [Open-MAGVIT2](https://github.com/TencentARC/SEED-Voken),
 [IBQ](https://github.com/TencentARC/SEED-Voken),
 [iFSQ / LlamaGen-REPA](https://github.com/Tencent-Hunyuan/iFSQ); evaluation harness
-adapted from [UniWorld](https://github.com/PKU-YuanGroup/UniWorld).
+adapted from [UniWorld](https://github.com/PKU-YuanGroup/UniWorld).