Makefile clean utility to remove cython cached objects (apache#881)

Makefile

@@ -71,3 +71,14 @@ test-coverage:
 	poetry run coverage report -m --fail-under=90
 	poetry run coverage html
 	poetry run coverage xml
+
+
+clean:
+	@echo "Cleaning up Cython and Python cached files"
+	@rm -rf build dist *.egg-info
+	@find . -name "*.so" -exec echo Deleting {} \; -delete
+	@find . -name "*.pyc" -exec echo Deleting {} \; -delete
+	@find . -name "__pycache__" -exec echo Deleting {} \; -exec rm -rf {} +
+	@find . -name "*.pyd" -exec echo Deleting {} \; -delete
+	@find . -name "*.pyo" -exec echo Deleting {} \; -delete
+	@echo "Cleanup complete"

mkdocs/docs/contributing.md

@@ -88,6 +88,16 @@ In contrast to the name suggest, it doesn't run the checks on the commit. If thi
 
 You can bump the integrations to the latest version using `pre-commit autoupdate`. This will check if there is a newer version of `{black,mypy,isort,...}` and update the yaml.
 
+## Cleaning
+
+Removal of old cached files generated during the Cython build process:
+
+```bash
+make clean
+```
+
+Helps prevent build failures and unexpected behavior by removing outdated files, ensuring that only up-to-date sources are used & the build environment is always clean.
+
 ## Testing
 
 For Python, `pytest` is used a testing framework in combination with `coverage` to enforce 90%+ code coverage.