This commit updates the Maven Plugin to tolerate projects that are using
the module path on the JVM and targeting native images with AOT.
Previously, the plugin compiled AOT sources directly to target/classes
and the presence of a module-info there is enough to trigger a
compilation on the module path.
With this change we now compile in a separate directory that contains
the generated AOT classes (typically CGLIB proxies). These are copied to
target/classes once compilation completes already.
The integration test also uses our parent, rather than relying on what
Maven provides. That's because older Maven versions provide a default
compiler plugin version that did not handle the module path correctly.
Closes gh-33383
05468def54