Add release notes for 3.3.0 (#1357) (#1364)

(cherry picked from commit 66354e6)

Signed-off-by: opensearch-ci <opensearch-infra@amazon.com>
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: opensearch-trigger-bot[bot]

release-notes/opensearch-index-management-dashboards-plugin.release-notes-3.3.0.0.md

@@ -0,0 +1,6 @@
+## Version 3.3.0 Release Notes
+
+Compatible with OpenSearch and OpenSearch Dashboards version 3.3.0
+
+### Maintenance
+* Increment version to 3.3.0.0 ([#1347](https://github.com/opensearch-project/index-management-dashboards-plugin/pull/1347))