Change reviewer recommender CI template to remote URL

.gitlab/ci/review.gitlab-ci.yml

+include:
+  - remote: 'https://gitlab.com/gitlab-org/modelops/applied-ml/review-recommender/ci-templates/-/raw/v0.2.1/recommender/Reviewers.gitlab-ci.yml'
+
 review-cleanup:
   extends:
     - .default-retry
@@ -65,3 +68,9 @@ danger-review-local:
     - .review:rules:danger-local
   script:
     - run_timed_command danger_as_local
+
+reviewers-recommender:
+  extends:
+    - .default-retry
+  stage: test
+  needs: []