promote the archives to central repo for fast downloading from nearest mirror

I know the mvnd official host location is https://downloads.apache.org/maven/mvnd/. If the binaries are also published to the central repo, we can download them from a faster local/internal mirror. The GAV could be:
```
group=org.apache.maven
artifact=maven-mvnd
classifier=linux-amd64/darwin-aarch64/generic/...
```

The issue names no files, tests, or entry points. Start by reviewing how archives are currently published at downloads.apache.org/maven/mvnd/ and determine the Central Repository coordinates and classifiers; done means the same binaries are available through Central Repository mirrors.

Written by the indexing model from the issue text.