Add automated release management

.gitlab-ci.yml

+stages:
+  - deploy
+
+create_package:
+  stage: deploy
+  script:
+    - version=$([[ -z "$CI_COMMIT_TAG" ]] && echo "branch=$CI_COMMIT_REF_NAME" || echo "tag=$CI_COMMIT_TAG")
+    - 'curl --header "Job-Token: ${CI_JOB_TOKEN}" --data $version https://git.1xinternet.de/api/v4/projects/${CI_PROJECT_ID}/packages/composer'
+  only:
+    - develop
+    - release
+    - master
+    - tags
+