chore(NA): adds es forward v9 pipeline file (#204113)

Closes https://github.com/elastic/kibana-operations/issues/215 and
completes https://github.com/elastic/kibana/pull/204111

This PR adds the actual pipeline file that
https://github.com/elastic/kibana/pull/204111 should run.

.buildkite/pipelines/es_forward_v9.yml

@@ -0,0 +1,57 @@
+steps:
+  - command: .buildkite/scripts/lifecycle/pre_build.sh
+    label: Pre-Build
+    timeout_in_minutes: 10
+    agents:
+      image: family/kibana-ubuntu-2004
+      imageProject: elastic-images-prod
+      provider: gcp
+      machineType: n2-standard-2
+
+  - wait
+
+  - command: .buildkite/scripts/steps/build_kibana.sh
+    label: Build Kibana Distribution
+    agents:
+      image: family/kibana-ubuntu-2004
+      imageProject: elastic-images-prod
+      provider: gcp
+      machineType: n2-standard-8
+      preemptible: true
+    key: build
+    if: "build.env('KIBANA_BUILD_ID') == null || build.env('KIBANA_BUILD_ID') == ''"
+    timeout_in_minutes: 60
+    retry:
+      automatic:
+        - exit_status: '-1'
+          limit: 3
+
+  - command: .buildkite/scripts/steps/test/pick_test_group_run_order.sh
+    label: 'Pick Test Group Run Order'
+    agents:
+      image: family/kibana-ubuntu-2004
+      imageProject: elastic-images-prod
+      provider: gcp
+      machineType: n2-standard-2
+    timeout_in_minutes: 10
+    env:
+      JEST_UNIT_SCRIPT: '.buildkite/scripts/steps/test/jest.sh'
+      JEST_INTEGRATION_SCRIPT: '.buildkite/scripts/steps/test/jest_integration.sh'
+      FTR_CONFIGS_SCRIPT: '.buildkite/scripts/steps/test/ftr_configs.sh'
+      LIMIT_CONFIG_TYPE: integration,functional
+    retry:
+      automatic:
+        - exit_status: '*'
+          limit: 1
+
+  - wait: ~
+    continue_on_failure: true
+
+  - command: .buildkite/scripts/lifecycle/post_build.sh
+    label: Post-Build
+    timeout_in_minutes: 10
+    agents:
+      image: family/kibana-ubuntu-2004
+      imageProject: elastic-images-prod
+      provider: gcp
+      machineType: n2-standard-2