Add descriptions to `yaml`

This allows HF API access to the model's name ("BioCLIP 2") and description (see [example](https://huggingface.co/docs/huggingface_hub/main/en/package_reference/cards#huggingface_hub.ModelCard.from_template.example)). It should then render nicely on the [Imageomics Catalog](https://imageomics.github.io/catalog/) for improved discoverability.

README.md

@@ -4,6 +4,8 @@ license:
 language:
 - en
 library_name: open_clip
+model_name: "BioCLIP 2"
+model_description: "BioCLIP 2 is a foundation model for biology organismal images. It is trained on TreeOfLife-200M on the basis of a CLIP model (ViT-14/L) pre-trained on LAION-2B. BioCLIP 2 yields state-of-the-art performance in recognizing various species. More importantly, it demonstrates emergent properties beyond species classification after extensive hierarchical contrastive training."
 tags:
 - biology
 - CV