refactor: convert script to automtu package with CI workflow

https://chatgpt.com/share/697112b2-0410-800f-93ff-9372b603d43f

Makefile

@@ -1,4 +1,4 @@
-PY ?= python3
+PYTHON ?= python3
 
 .PHONY: test install help
 
@@ -9,11 +9,4 @@ help:
 	@echo "  make help      - this help"
 
 test:
-	$(PY) -m unittest -v test.py
-
-install:
-	@echo "Installation is provided via your package manager:"
-	@echo "  pkgmgr install automtu"
-	@echo ""
-	@echo "Alternatively, run the tool directly:"
-	@echo "  $(PY) main.py [--options]"
+	@PYTHONPATH="$(CURDIR)/src" "$(PYTHON)" -m unittest discover -s tests/unit -p "test_*.py" -v