Publish the final released zip files to Maven Central also

As discussed here https://lists.apache.org/thread/14xzmfgh6qn8qmlw8fdfbwszpox8gnv0
the desired change is also publish the artifacts to maven central in addition to the currently used Github releases page and the Apache download servers.

The normal maven ends up here
https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.9/apache-maven-3.9.9-bin.zip

I propose to put the mvnd in a similar location with the intent of making it easily findable to others.
https://repo.maven.apache.org/maven2/org/apache/maven/apache-mvnd/1.0.2/...

Start with the linked Apache mailing-list discussion, then compare the current GitHub Releases page and Apache download-server publication with the Maven Central layout shown in the issue. Done means the final mvnd release artifacts are also published under the proposed org/apache/maven/apache-mvnd path and remain discoverable alongside the existing release locations.

Written by the indexing model from the issue text.