Ensure download stats work, add pipeline tag

This PR enables download stats for your model, see https://huggingface.co/docs/hub/en/models-download-stats for details.

README.md

@@ -1,5 +1,7 @@
 ---
 license: mit
+pipeline_tag: any-to-any
+library_name: mini-omni2
 ---
 
 # Mini-Omni2