Add placeholder ci/cd pipeline and dummy package

.gitlab-ci.yml

+default:
+  image: python3.10-slim
+
+stages:
+  - lint
+  - test
+  - build
+  - publish # publish instead of deploy
+
+# Caching of dependencies to speed up builds
+variables:
+  PIP_CACHE_DIR: "$CI_PROJECT_DIR/.cache/pip"
+
+cache:
+  paths:
+    - .cache/pip
+    - venv/
+
+# Make sure each step is executed in a virtual environment with some basic dependencies present
+before_script:
+  - python --version # For debugging
+  - pip install --upgrade virtualenv twine wheel pipenv black flake8 # common packaging requirements
+  - virtualenv venv --system-site-packages #provide the installed packages
+  - source venv/bin/activate
+
+run_black:
+  stage: lint
+  script:
+    - echo "run black"
+
+run_flake8:
+  stage: lint
+  script:
+    - echo "run flake8"
+
+run_unit_tests:
+  stage: test
+  script:
+    - echo "run python unit tests"
+
+package_files:
+  stage: build
+  # add storing of the build artefact
+  script:
+    - echo "python setup.py sdist bdist_wheel # or something similar"
+
+publish_on_gitlab:
+  stage: publish
+  environment: gitlab
+  script:
+    - echo "run twine for gitlab"
+#     - sed -i "s/BUILD_ID/.dev${CI_JOB_ID}/g" VERSION
+#     - python setup.py sdist bdist_wheel # todo replace this with reading the build artefact
+#     - |
+#       TWINE_PASSWORD=${CI_JOB_TOKEN} \
+#       TWINE_USERNAME=gitlab-ci-token \
+#       python -m twine upload \
+#       --repository-url ${CI_API_V4_URL}/projects/${CI_PROJECT_ID}/packages/pypi dist/*
+
+publish_on_pipy:
+  stage: publish
+  environment: pipy
+  script:
+    - echo "run twine for pipy"
+#     - sed -i "s/BUILD_ID/.dev${CI_JOB_ID}/g" VERSION
+#     - python setup.py sdist bdist_wheel # todo replace this with reading the build artefact from `package_file`` step
+#     - |
+#       TWINE_PASSWORD=${PIPY_TOKEN} \
+#       TWINE_USERNAME=${PIPY_USERNAME} \
+#       python -m twine upload \
+#       --repository-url ${CI_API_V4_URL}/projects/${CI_PROJECT_ID}/packages/pypi dist/*
+# TODO: replace URL with a pipy URL

map/__init__.py

+""" My Awesome Package """

map/cool_module.py

+""" Cool module containing functions, classes and other useful things """
+
+def greeter():
+    print("Hello World!")