feat(autolabels): Use the `AUTOLABELS_ENABLED` to allow teams to opt out of the job.

Issue: gitlab-com/gl-infra/common-ci-tasks#34

templates/standard.yml

@@ -21,6 +21,8 @@ include:
   - local: autolabels.yml
     inputs:
       stage: $[[ inputs.validate_stage ]]
+    rules:
+      - if: $AUTOLABELS_ENABLED == null || $AUTOLABELS_ENABLED != "false"
   - local: editorconfig-check.yml
     inputs: