ci(buildkite): add initial elastic-agent-helm-charts pipeline

.buildkite/pipeline.elastic-agent-helm-charts.yml

@@ -0,0 +1,13 @@
+# yaml-language-server: $schema=https://raw.githubusercontent.com/buildkite/pipeline-schema/main/schema.json
+
+steps:
+
+  - label: ":elastic-stack: Create helm chart"
+    command: |
+      echo "TBC"
+
+  - wait: ~
+
+  - label: ":elastic-stack: Publish helm chart"
+    command: |
+      echo "TBC"

catalog-info.yaml

@@ -328,3 +328,39 @@ spec:
           access_level: MANAGE_BUILD_AND_READ
         everyone:
           access_level: BUILD_AND_READ
+
+---
+# yaml-language-server: $schema=https://gist.githubusercontent.com/elasticmachine/988b80dae436cafea07d9a4a460a011d/raw/rre.schema.json
+apiVersion: backstage.io/v1alpha1
+kind: Resource
+metadata:
+  name: buildkite-elastic-agent-helm-charts
+  description: Elastic-agent Helm Charts Pipeline
+  links:
+    - title: Pipeline
+      url: https://buildkite.com/elastic/elastic-agent-helm-charts
+
+spec:
+  type: buildkite-pipeline
+  owner: group:ingest-fp
+  system: platform-ingest
+  implementation:
+    apiVersion: buildkite.elastic.dev/v1
+    kind: Pipeline
+    metadata:
+      name: elastic-agent-helm-charts
+      description: Runs elastic-agent helm charts
+    spec:
+      pipeline_file: ".buildkite/pipeline.elastic-agent-helm-charts.yml"
+      provider_settings:
+        trigger_mode: none # don't trigger jobs from github activity
+      repository: elastic/elastic-agent
+      teams:
+        ingest-fp:
+          access_level: MANAGE_BUILD_AND_READ
+        observablt-robots:
+          access_level: MANAGE_BUILD_AND_READ
+        release-eng:
+          access_level: BUILD_AND_READ
+        everyone:
+          access_level: READ