feat: Add new GitLab mirroring GitHub Action

Author: adintegra

.github/workflows/gitlab-mirror-test.yml

@@ -14,5 +14,7 @@ jobs:
       - uses: yesolutions/mirror-action@master
         with:
           REMOTE: https://gitlab.ldbar.ch/interactivethings/visualize-mirroring-test.git
+          DEBUG: "true"
+          PUSH_ALL_REFS: "false"
           GIT_USERNAME: gitlab+deploy-token-8
           GIT_PASSWORD: ${{ secrets.GITLAB_PASSWORD_TEST }}