Optional quiet output

[ng-galien]

Implements a new option for discarding empty outputs when chaining statements in a single call as it's described here #3013

This act as a Feature Switch, with smallest necessary additions, as it breaks existing behavior when enabled.

The option is named quietOutput and is intended to be the driver counterpart of the --quiet option of psql

All Submissions:

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?

New Feature Submissions:

1. Does your submission pass tests?
2. Does ./gradlew styleCheck pass ?
3. Have you added your new test classes to an existing test suite in alphabetical order?

Changes to Existing Features:

• Does this break existing behaviour? If so please explain.
• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your core changes, as applicable?
• Have you successfully run tests with your changes locally?