add badges

README.md

 # Release by Changelog
 
+[![Pipeline](https://lab.frogg.it/swepy/release-by-changelog/badges/main/pipeline.svg)](https://lab.frogg.it/swepy/release-by-changelog/-/pipelines?ref=main)
+[![Ruff](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/astral-sh/ruff/main/assets/badge/v2.json)](https://github.com/astral-sh/ruff)
+
+
 Release a new version of a software based on CHANGELOG.md file.
 
 ## Installation