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GH-40825:  [Java] Adding Spotless to Flight module  (#42063)

### Rationale for this change

Adding code style and formatting options for Flight module. 

- [X] flight-core
- [X] flight-integration-tests
- [X] flight-sql
- [X] flight-sql-jdbc-core
- [X] flight-sql-jdbc-driver

### What changes are included in this PR?

Code formatting spotless plugin has been added. 

Some explicit involvement required for the following

```
[WARN] /home/vibhatha/github/fork/arrow/java/flight/flight-core/src/main/java/org/apache/arrow/flight/FlightProducer.java:94:3: Missing a Javadoc comment. [MissingJavadocMethod]
Audit done.
[WARNING] src/main/java/org/apache/arrow/flight/FlightProducer.java:[94,3] (javadoc) MissingJavadocMethod: Missing a Javadoc comment.
```

```
[WARN] /home/vibhatha/github/fork/arrow/java/flight/flight-sql-jdbc-core/src/main/java/org/apache/arrow/driver/jdbc/utils/AvaticaParameterBinder.java:58:3: Missing a Javadoc comment. [MissingJavadocMethod]
Audit done.
[WARNING] src/main/java/org/apache/arrow/driver/jdbc/utils/AvaticaParameterBinder.java:[58,3] (javadoc) MissingJavadocMethod: Missing a Javadoc comment.
AvaticaParameterBinder constructor java docs manually added
```

These docs have been explicitly added. 

### Are these changes tested?

Yes, but doesn't involve test cases, the plugin itself corrects. 

* GitHub Issue: #40825

Authored-by: Vibhatha Abeykoon <vibhatha@gmail.com>
Signed-off-by: David Li <li.davidm96@gmail.com>