ci(github): add github sync job

!1

.gitlab-ci.yml

@@ -0,0 +1,29 @@
+stages:
+    - sync
+
+
+.git_push_mirror:
+    image: alpine:latest
+    stage: sync
+    before_script:
+        - apk update
+        - apk add git
+    script:
+        - git clone https://gitlab-ci-token:${CI_JOB_TOKEN}@gitlab.com/$CI_PROJECT_PATH --mirror $CI_PROJECT_NAME
+        - cd $CI_PROJECT_NAME 
+        - git remote add destination $GIT_SYNC_URL 
+        - echo "https://gitlab.com/ $CI_PROJECT_PATH / $CI_PROJECT_NAME .git"
+        - git push destination --mirror
+    artifacts:
+        expire_in: 1 day
+    rules:
+        - if: '$CI_COMMIT_BRANCH == "master"'
+        - if: '$CI_COMMIT_BRANCH == "development"'
+          when: always
+
+
+Github (Push --mirror):
+    variables:
+        GIT_SYNC_URL: "https://$GITHUB_USERNAME_ROBOT:$GITHUB_TOKEN_ROBOT@github.com/NoFussComputing/execution_environment.git"
+    extends:
+        - .git_push_mirror