doc: add linting, formatting and type checking badges

README.md

@@ -7,6 +7,8 @@
 [![PyPI badge](https://img.shields.io/pypi/v/magic-list)](<https://pypi.org/project/magic-list/>)
 [![Downloads](https://static.pepy.tech/badge/magic-list)](https://pepy.tech/project/magic-list)
 [![Tests](https://github.com/qexat/magic-list/actions/workflows/tests.yml/badge.svg)](https://github.com/qexat/magic-list/actions)
+[![Ruff](https://github.com/qexat/magic-list/actions/workflows/ruff.yml/badge.svg)](https://github.com/qexat/magic-list/actions)
+[![Typechecking](https://github.com/qexat/magic-list/actions/workflows/typechecking.yml/badge.svg)](https://github.com/qexat/magic-list/actions)
 [![License: MIT](https://img.shields.io/badge/License-MIT-purple.svg)](https://opensource.org/licenses/MIT)
 
 Magic List is a module that extends the built-in list type.