Add pipeline tag, library name and license

This PR adds the `pipeline_tag` and `library_name` tags to improve discoverability. It also adds the license, ensuring compliance and transparency.

README.md

@@ -3,7 +3,11 @@ datasets:
 - HuggingFaceTB/smollm-corpus
 language:
 - en
+license: apache-2.0
+library_name: transformers
+pipeline_tag: text-generation
 ---
+
 # Outlier-Safe Pre-Training
 
 [![arXiv](https://img.shields.io/badge/arXiv-2506.19697-b31b1b?style=flat-square)](https://arxiv.org/abs/2506.19697)