[Release][Java] Verify staged maven artifacts

We have two tests right now:
1. Execute `mvn test` from the source tarball's java directory testing the source https://github.com/apache/arrow/blob/master/dev/release/verify-release-candidate.sh#L278
2. Verify the checksums and signatures of the uploaded maven artifacts https://github.com/apache/arrow/blob/master/dev/release/verify-release-candidate.sh#L766

But we don't actually **test** the packages. We should add that to the verification scripts, since 7.0 is going to be the first release shipping the jars with bundled JNI libraries.

cc @kou @anthonylouisbsb

**Reporter**: [Krisztian Szucs](https://issues.apache.org/jira/browse/ARROW-15486) / @kszucs
#### Related issues:
- [[Release][Java] Add missing files to list of artifacts to deploy](https://github.com/apache/arrow/issues/31193) (relates to)
#### Original Issue Attachments:
- [image-2022-02-18-07-07-45-928.png](https://issues.apache.org/jira/secure/attachment/13040235/image-2022-02-18-07-07-45-928.png)
#### PRs and other links:
- [GitHub Pull Request apache/arrow#148](https://github.com/apache/arrow-cookbook/pull/148)

_{**Note**: *This issue was originally created as [ARROW-15486](https://issues.apache.org/jira/browse/ARROW-15486). Please see the [migration documentation](https://github.com/apache/arrow/issues/14542) for further details.*}

Inizia da dev/release/verify-release-candidate.sh, in particolare dal test Java esistente per il source-tarball e dai passaggi di verifica degli artifact Maven. Esamina come viene eseguito `mvn test` dalla directory Java del source-tarball e come vengono verificati checksum e firme. Il lavoro è completato quando gli script di verifica testano anche i pacchetti Maven, inclusi i jar con librerie JNI incorporate.

Scritto dal modello di indicizzazione a partire dal testo della issue.