Added missing copyright notice.

General cleanup.

Added AI Loader class.
Removed most main methods from scripts.
Added Treasure AI that was missing in loading.

Organizing all imports.

Moved to Maven instead of Gradle.
Using proper project structure and package structure.

Moved to Maven instead of Gradle.
Using proper project structure and package structure.

Fixed minor typos.

Moving all files to main folder.
Using Gradle to define, manage dependecies and build the project.
Upgraded Gradle wrapper.

Patch by: @St3eT
Reviewed by: @Zoey76