Add some metadata for discoverability (#1)

- Add some metadata for discoverability (8fa030b8dfcbb3174a7313ce96382708b9bc891e)


Co-authored-by: Omar Sanseviero <osanseviero@users.noreply.huggingface.co>

README.md

@@ -1,3 +1,6 @@
+---
+pipeline_tag: text-to-video
+---
 
 License: Apache-2.0