Add release notes for 1.0.0.0-rc1 (opensearch-project#33)

Signed-off-by: Tyler Ohlsen <ohltyler@amazon.com>

Author: ohltyler

release-notes/opensearch-anomaly-detection-dashboards.release-notes-1.0.0.0-rc1.md

@@ -0,0 +1,17 @@
+## Version 1.0.0.0-rc1 Release Notes
+
+Compatible with OpenSearch Dashboards 1.0.0-rc1
+
+### Enhancements
+
+* Update sample data naming conventions ([#24](https://github.com/opensearch-project/anomaly-detection-dashboards-plugin/pull/24))
+* Update API call endpoints from _opendistro to _plugins ([#25](https://github.com/opensearch-project/anomaly-detection-dashboards-plugin/pull/25))
+
+### Infrastructure
+
+* Fix CI workflows; change to run against PR ([#29](https://github.com/opensearch-project/anomaly-detection-dashboards-plugin/pull/29))
+* Bump plugin version to 1.0.0.0-rc1 ([#32](https://github.com/opensearch-project/anomaly-detection-dashboards-plugin/pull/32))
+
+### Documentation
+
+* Update doc links to point to OpenSearch ([#30](https://github.com/opensearch-project/anomaly-detection-dashboards-plugin/pull/30))