metadata-copy should follow recommendation

[fniephaus]

On the GraalVM website, we recommend to put metadata into directory following this pattern:

foo.jar has its configurations in META-INF/native-image/foo_groupID/foo_artifactID
bar.jar has its configurations in META-INF/native-image/bar_groupID/bar_artifactID

It seems that the metadata-copy copies metadata into just /META-INF/native-image.
Would be great if we could adjust it so that it follows our recommendation.

[vjovanov]

@dnestoro is this issue fixed?

[dnestoro]

Kind of... for gradle we are just suggesting (in our docs) where should user copy metadata files (and we won't have default value for it in the plugin implementation), while maven has actual default directory for metadataCopy task.

So this issue can be closed