Add release notes for v0.210.0 (#8412)

Author: eksctl-bot

docs/release_notes/0.210.0.md

@@ -0,0 +1,14 @@
+# Release v0.210.0
+
+## 🎯 Improvements
+
+- Change node role policy ReadOnly -> PullOnly (support ECR pull-through cache) (#8386)
+
+## 🐛 Bug Fixes
+
+- Fix Clusters Fail to Create Private Endpoint and Identity Provider (#8411)
+
+## Acknowledgments
+
+The eksctl maintainers would like to sincerely thank @amdonov and @artem-nefedov.
+