Modifying build.gradles for Maven Central
Moving test utils into dedicated classes and package.
Moved MessageFactory to correct package.
Logging verbosity changes.
Adding Maven central plumbing to build.gradle.
Simplifying the Gradle config for this project as it doesn't need to run as a standalone Vert.x module.
Refactored HttResourceIntegrationTest to use test utilities.
Cleaning up server creation.
Cleaning up mod.json