Add 2.10.0 release notes (#354)

Signed-off-by: Arpit Bandejiya <abandeji@amazon.com>
(cherry picked from commit 0a5e902)
(cherry picked from commit 30b312b)

release-notes/opensearch-asynchronous-search.release-notes-2.10.0.0.md

@@ -0,0 +1,15 @@
+## Version 2.8.0.0 2023-09-25
+
+Compatible with OpenSearch 2.10.0
+
+### Maintenance
+* Upgrade Guava version to 32.0.1 ([#347](https://github.com/opensearch-project/asynchronous-search/pull/347))
+* Increment version to 2.10.0 ([#321](https://github.com/opensearch-project/asynchronous-search/pull/321))
+
+### Infrastructure
+* Updates demo certs used in rest tests ([#341](https://github.com/opensearch-project/asynchronous-search/pull/341))
+* Adding release workflow for the asynchronous search ([#330](https://github.com/opensearch-project/asynchronous-search/pull/330))
+* Refactoring changes in main ([#328](https://github.com/opensearch-project/asynchronous-search/pull/328))
+
+### Documentation
+* Add 2.10.0 release notes ([#353](https://github.com/opensearch-project/asynchronous-search/pull/353))