Test Code Quality checking

Changelog: other

.gitlab-ci.yml

@@ -58,6 +58,14 @@ license_compliance:
   script:
     - poetry run reuse lint
 
+code_quality:
+  rules:
+    - if: $CODE_QUALITY_DISABLED
+      when: never
+    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
+    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
+    - if: $CI_COMMIT_TAG
+
 test:
   extends:
     - .base_job