Add 2.1.0 release note (#212)

Signed-off-by: bowenlan-amzn <bowenlan23@gmail.com>

release-notes/opensearch-index-management-dashboards-plugin.release-notes-2.1.0.0.md

@@ -0,0 +1,19 @@
+## Version 2.1.0.0 2022-07-06
+
+Compatible with OpenSearch 2.1.0
+
+### Features
+* Merge snapshot management into main branch ([#205](https://github.com/opensearch-project/index-management-dashboards-plugin/pull/205))
+
+### Enhancement
+* Snapshot management small fixes ([#208](https://github.com/opensearch-project/index-management-dashboards-plugin/pull/208))
+* Tune the column width, fix the problem of showing snapshot failures ([#210](https://github.com/opensearch-project/index-management-dashboards-plugin/pull/210))
+
+### Bug fixes
+* Fix transforms UI for supporting rendering of alias fields ([#200](https://github.com/opensearch-project/index-management-dashboards-plugin/pull/200))
+
+### Documentation
+* Adding workflow for creating documentation issues. ([#197](https://github.com/opensearch-project/index-management-dashboards-plugin/pull/197))
+
+### Maintenance
+* Version bump 2.1.0 ([#206](https://github.com/opensearch-project/index-management-dashboards-plugin/pull/206))