Add module-info and compile it with Java 9+

[tsmock]

This fixes #566.

With that said, this is typically not the preferred method until all dependencies at least have the Automatic-Module-Name manifest entry -- ideally, the xmpcore project would add an Automatic-Module-Name entry to its manifest, but I somehow doubt that will happen.

From the compile-time output:

Required filename-based automodules detected: [xmpcore-6.1.11.jar]. Please don't publish this project to a public artifact repository!

See also #621 .

[drewnoakes]

This looks like the long term solution, but until xmp-core sports modules, we are stuck with the approach from #621.