Create new release when merge requests are merged into the
$STABLE_BRANCH branch.
templates/Release/Semantic-release.yaml: run semantic-release with
the latest EOLE container for $STABLE_BRANCH branch if one of its
configuration is present.
.gitlab-ci.yml: execute a new stage release for
semantic-release.
release.config.js: create docs/CHANGELOG.md and publish new
releases on Gitlab.
Mangle commits to have links for users, issues and commits id.
release-rules.js: create semantic version update rules based on
docs/CONTRIBUTING.md.