Add CI/CD job for publishing the package on PyPI

* triggered by version tags

.gitlab-ci.yml

@@ -15,3 +15,11 @@ sonarqube-check:
     - master
     - merge_requests
 
+pypi-release:
+  rules:
+    - if: '$CI_COMMIT_TAG =~ /^v\d+/'
+  script:
+    - pip3 install --upgrade pip build twine
+    - rm -f dist/*
+    - python3 -m build
+    - TWINE_USERNAME=${PYPI_USER} TWINE_PASSWORD=${PYPI_PASSWORD} python3 -m twine upload --skip-existing --non-interactive dist/*