📝 Add badges to README

Author: foosel

README.md

@@ -1,5 +1,13 @@
 # MkDocs Site URLs Plugin
 
+![GitHub release](https://img.shields.io/github/v/release/OctoPrint/mkdocs-site-urls?logo=github&logoColor=white)
+![PyPI](https://img.shields.io/pypi/v/mkdocs-site-urls?logo=python&logoColor=white)
+![Build status](https://img.shields.io/github/actions/workflow/status/OctoPrint/mkdocs-site-urls/build.yml?branch=main)
+[![Code of Conduct](https://img.shields.io/badge/Contributor%20Covenant-v2.0%20adopted-ff69b4.svg)](https://octoprint.org/conduct/)
+[![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
+[![Imports: isort](https://img.shields.io/badge/%20imports-isort-%231674b1)](https://pycqa.github.io/isort/)
+[![pre-commit](https://img.shields.io/badge/pre--commit-enabled-brightgreen?logo=pre-commit&logoColor=white)](https://github.com/pre-commit/pre-commit)
+
 A MkDocs plugin that adds support for site-relative `site:` URLs.
 
 Example: