Add model card metadata

This PR ensures people can find your model at https://huggingface.co/models?pipeline_tag=text-generation,\nenables the "how to use" button on the top right (with the relevant Transformers code). I also added a link to the Github repository.

README.md

@@ -1 +1,9 @@
-https://arxiv.org/abs/2502.06858
+---
+library_name: transformers
+pipeline_tag: text-generation
+license: mit
+---
+
+[LLM-Supported Natural Language to Bash Translation](https://arxiv.org/abs/2502.06858)
+
+Code: https://github.com/westenfelder/NL2SH