add release notes for 2.18

Signed-off-by: Chenyang Ji <[email protected]>

release-notes/opensearch-query-insights.release-notes-2.18.0.0.md

@@ -0,0 +1,28 @@
+## Version 2.18.0.0 Release Notes
+Compatible with OpenSearch 2.18.0
+
+### Maintenance
+* Enhanced security based integration tests ([#113](https://github.com/opensearch-project/query-insights/pull/113))
+* Set default true for field name and type setting ([#144](https://github.com/opensearch-project/query-insights/pull/144))
+
+
+### Bug Fixes
+* Refactor parsing logic for Measurement ([#112](https://github.com/opensearch-project/query-insights/pull/112))
+
+### Enhancements
+* Support time range parameter to get historical top n queries from local index ([#84](https://github.com/opensearch-project/query-insights/pull/84))
+* Refactor query shape field data maps to support the WithFieldName interface ([#111](https://github.com/opensearch-project/query-insights/pull/111))
+* Add data models for health stats API ([#120](https://github.com/opensearch-project/query-insights/pull/120))
+* Create health_stats API for query insights ([#122](https://github.com/opensearch-project/query-insights/pull/122))
+* Add OpenTelemetry counters for error metrics ([#124](https://github.com/opensearch-project/query-insights/pull/124))
+* Add grouping settings for query field name and type ([#135](https://github.com/opensearch-project/query-insights/pull/135))
+* Add field type to query shape ([#140](https://github.com/opensearch-project/query-insights/pull/140))
+* Adding cache eviction and listener for invalidating index field type mappings on index deletion/update ([#142](https://github.com/opensearch-project/query-insights/pull/142))
+
+
+### Infrastructure
+* Upgrade deprecated actions/upload-artifact versions to v3 ([#117](https://github.com/opensearch-project/query-insights/pull/117))
+
+### Documentation
+* Add document for Query Insights health_stats API and error counter metrics ([#8627](https://github.com/opensearch-project/documentation-website/pull/8627))
+* Added 2.18 release notes ([#91](https://github.com/opensearch-project/query-insights/pull/91))