add model metadata

This PR add model metadata. `text-generation` will display the `Use this model` drop down for integration with vLLM, etc.

README.md

@@ -2,6 +2,10 @@
 license: apache-2.0
 datasets:
 - continuedev/instinct-data
+base_model:
+- Qwen/Qwen2.5-Coder-7B
+pipeline_tag: text-generation
+library_name: transformers
 ---
 
 <img src="https://cdn-uploads.huggingface.co/production/uploads/686c5c546abedce0f7ac048a/B7PeaDQCDnlgT3Tmf7fsb.png" width=250>