[Java][Doc] Define next steps for Arrow Tools module

There are functionalities such as [GenerateSampleData.java](https://github.com/apache/arrow/blob/master/java/vector/src/main/java/org/apache/arrow/vector/GenerateSampleData.java) for example that needs to be reviewed and analyze how this functionality/utility will be related with Arrow Tools module and define a common patter to use for next utilities that are planning to create 

**Reporter**: [David Dali Susanibar Arce](https://issues.apache.org/jira/browse/ARROW-17921) / @davisusanibar

_{**Note**: *This issue was originally created as [ARROW-17921](https://issues.apache.org/jira/browse/ARROW-17921). Please see the [migration documentation](https://github.com/apache/arrow/issues/14542) for further details.*}

Commencez par examiner java/vector/src/main/java/org/apache/arrow/vector/GenerateSampleData.java et le module Arrow Tools existant. Retracez la relation entre cet utilitaire et le module, puis examinez les utilitaires voisins ou les recommandations du module. Le travail est considéré comme terminé lorsqu’une relation convenue et un modèle commun pour les futurs utilitaires sont documentés.

Rédigé par le modèle d'indexation à partir du texte de l'issue.