Release notes for 2.4.0 (#1259)

Signed-off-by: Rupal Mahajan <[email protected]>
(cherry picked from commit eef1979)

Author: rupal-bq

release-notes/opensearch-observability.release-notes-2.4.0.0.md

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+## Version 2.4.0.0 Release Notes
+Compatible with OpenSearch and OpenSearch Dashboards Version 2.4.0
+
+### Features
+* Add metrics ([#1234](https://github.com/opensearch-project/observability/pull/1234))
+* Add log pattern table ([#1212](https://github.com/opensearch-project/observability/pull/1212))
+
+### Enhancements
+* Change auto expand replicas to 0-2 for better availability ([#1186](https://github.com/opensearch-project/observability/pull/1186))
+* Add anomaly count and config to patterns table ([#1216](https://github.com/opensearch-project/observability/pull/1216))
+* Adding save functionality to metrics ([#1241](https://github.com/opensearch-project/observability/pull/1241))
+* Persist redux state in browser ([#1178](https://github.com/opensearch-project/observability/pull/1178))
+* UI changes for sidebar and update to PPL request ([#1246](https://github.com/opensearch-project/observability/pull/1246))
+* Backtick supports ([#1250](https://github.com/opensearch-project/observability/pull/1250))
+* Use in-memory count for total hits in patterns ratio ([#1254](https://github.com/opensearch-project/observability/pull/1254))
+* Show metrics in events homepage ([#1232](https://github.com/opensearch-project/observability/pull/1232))
+* Update Sidepanel ([#1230](https://github.com/opensearch-project/observability/pull/1230))
+* Added dummy search field, panel push button ([#1227](https://github.com/opensearch-project/observability/pull/1227))
+* Adding visualizations panel to metrics ([#1222](https://github.com/opensearch-project/observability/pull/1222))
+* Add metrics api events ([#1214](https://github.com/opensearch-project/observability/pull/1214))
+
+### Bug Fixes
+* Fix column spacing and pattern table highlighting ([#1218](https://github.com/opensearch-project/observability/pull/1218))
+* Fix filtered pattern selection ([#1236](https://github.com/opensearch-project/observability/pull/1236))
+* Fixes for BWC issues, updated grammar ([#1235](https://github.com/opensearch-project/observability/pull/1235))
+* Minor UI changes for sidebar ([#1237](https://github.com/opensearch-project/observability/pull/1237))
+* Update minimatch version to 3.0.5 ([#1228](https://github.com/opensearch-project/observability/pull/1228))
+* Update detekt version ([#1226](https://github.com/opensearch-project/observability/pull/1226))
+* Fix metrics visualization regression ([#1244](https://github.com/opensearch-project/observability/pull/1244))
+* Fix Prometheus Mappings ([#1242](https://github.com/opensearch-project/observability/pull/1242))
+* Metrics bug fixes ([#1248](https://github.com/opensearch-project/observability/pull/1248))([#1253](https://github.com/opensearch-project/observability/pull/1253))
+* Fix metrics switch ([#1247](https://github.com/opensearch-project/observability/pull/1247))
+
+### Infrastructure
+* Add groupId to pluginzip publication ([#1115](https://github.com/opensearch-project/observability/pull/1115))
+* Enable windows and macos builds ([#1108](https://github.com/opensearch-project/observability/pull/1108))
+
+### Maintenance
+* Bump version to 2.4.0 ([#1071](https://github.com/opensearch-project/observability/pull/1071))