GHA to verify checklist items completion in PR descriptions (#10800)

Signed-off-by: Peter Nied <petern@amazon.com>

.github/workflows/pull-request-checks.yml

@@ -0,0 +1,28 @@
+name: Pull Request Checks
+
+on:
+  pull_request:
+    types:
+      [
+        opened,
+        edited,
+        review_requested,
+        synchronize,
+        reopened,
+        ready_for_review,
+      ]
+
+jobs:
+  verify-description-checklist:
+    name: Verify Description Checklist
+    runs-on: ubuntu-latest
+    steps:
+      - uses: peternied/check-pull-request-description-checklist@v1
+        with:
+          checklist-items: |
+            New functionality includes testing.
+            All tests pass
+            New functionality has been documented.
+            New functionality has javadoc added
+            Commits are signed per the DCO using --signoff
+            Commit changes are listed out in CHANGELOG.md file (See: [Changelog](../blob/main/CONTRIBUTING.md#changelog))

CHANGELOG.md

@@ -19,6 +19,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - [Remote cluster state] Download functionality of global metadata from remote store ([#10535](https://github.com/opensearch-project/OpenSearch/pull/10535))
 - [Remote cluster state] Restore global metadata from remote store when local state is lost after quorum loss ([#10404](https://github.com/opensearch-project/OpenSearch/pull/10404))
 - [AdmissionControl] Added changes for AdmissionControl Interceptor and AdmissionControlService for RateLimiting ([#9286](https://github.com/opensearch-project/OpenSearch/pull/9286))
+- GHA to verify checklist items completion in PR descriptions ([#10800](https://github.com/opensearch-project/OpenSearch/pull/10800))
 
 ### Dependencies
 - Bump `log4j-core` from 2.18.0 to 2.19.0