Add initial 0.30.0 release notes

Signed-off-by: Keith W. Campbell <keithc@ca.ibm.com>

doc/release-notes/0.30/0.30.md

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+
+# Eclipse OpenJ9 version 0.30.0 release notes
+
+These release notes support the [Eclipse OpenJ9 0.30.0 release plan](https://projects.eclipse.org/projects/technology.openj9/releases/0.30.0/plan).
+
+## Supported environments
+
+OpenJ9 release 0.30.0 supports OpenJDK 8, 11 and 17.
+
+All releases are tested against the OpenJ9 functional verification (FV) test suite, the OpenJDK test suites, and additional tests provided by Adoptium.
+
+To learn more about support for OpenJ9 releases, including OpenJDK levels and platform support, see [Supported environments](https://eclipse.org/openj9/docs/openj9_support/index.html).
+
+## Notable changes in this release
+
+The following table covers notable changes in v0.30.0. Further information about these changes can be found in the [user documentation](https://eclipse-openj9.github.io/openj9-docs/version0.30/).
+
+<table cellpadding="4" cellspacing="0" summary="" width="100%" rules="all" frame="border" border="1"><thead align="left">
+<tr>
+<th valign="bottom">Issue number</th>
+<th valign="bottom">Description</th>
+<th valign="bottom">Version / Platform</th>
+<th valign="bottom">Impact</th>
+</tr>
+</thead>
+<tbody>
+
+<tr>
+<td valign="top"><a href="https://github.com/eclipse-openj9/openj9/pull/13579">#13579</a></td>
+<td valign="top">Java dumps now identify any command-line arguments that were ignored.</td>
+<td valign="top">All versions</td>
+<td valign="top">If any arguments are ignored, the group is introduced with <tt>1CIIGNOREDARGS</tt>, followed by a line beginning with <tt>2CIIGNOREDARG</tt> for each ignored argument.</td>
+</tr>
+
+</tbody>
+</table>
+
+## Known issues
+
+The v0.30.0 release contains the following known issues and limitations:
+
+<table cellpadding="4" cellspacing="0" summary="" width="100%" rules="all" frame="border" border="1">
+<thead align="left">
+<tr>
+<th valign="bottom">Issue number</th>
+<th valign="bottom">Description</th>
+<th valign="bottom">Platform</th>
+<th valign="bottom">Impact</th>
+<th valign="bottom">Workaround</th>
+</tr>
+</thead>
+<tbody>
+
+</tbody>
+</table>
+
+## Other changes
+
+A full commit history for this release is available at [Eclipse OpenJ9 v0.30.0](https://github.com/eclipse-openj9/openj9/releases/tag/openj9-0.30.0).