Create catalog-info file (elastic#94963)

catalog-info.yaml

@@ -0,0 +1,32 @@
+---
+# yaml-language-server: $schema=https://gist.githubusercontent.com/elasticmachine/988b80dae436cafea07d9a4a460a011d/raw/e57ee3bed7a6f73077a3f55a38e76e40ec87a7cf/rre.schema.json
+apiVersion: backstage.io/v1alpha1
+kind: Resource
+metadata:
+  name: buildkite-pipeline-elasticsearch-promote-serverless
+  description: Promote to elasticsearch-serverless
+  links:
+    - title: Pipeline
+      url: https://buildkite.com/elastic/elasticsearch-promote-serverless
+spec:
+  type: buildkite-pipeline
+  system: buildkite
+  implementation:
+    apiVersion: buildkite.elastic.dev/v1
+    kind: Pipeline
+    metadata:
+      description: ':elasticsearch: Promote to elasticsearch-serverless'
+      name: elasticsearch / promote serverless
+    spec:
+      repository: elastic/elasticsearch
+      pipeline_file: .buildkite/promote-es-serverless.yml
+      teams:
+        elasticsearch-team: {}
+        everyone:
+          access_level: READ_ONLY
+      provider_settings:
+        trigger_mode: none
+      schedules:
+        daily promotion:
+          branch: main
+          cronline: '@daily'