Merge pull request #475 from sanders41/readme-pixi

Add pixi to readme

Author: sanders41

README.md

@@ -14,6 +14,7 @@ For package managment choose between:
 - [poetry](https://python-poetry.org/)
 - [setuptools](https://github.com/pypa/setuptools)
 - [uv](https://docs.astral.sh/uv/)
+- [pixi](https://prefix.dev/)
 
 Dev packages: