Introduce SplitProjectTask

This task, available for all jvm projects in the build, can be used to split a project into a separate project.
The task takes as input a list of classes that should be moved to the new project. It then scans the compiled classes
from the project-to-split for all the classes that the given names depends on, collecting all classes to be moved. Then,
it determines what dependencies the new project needs by analyzing the compile classpath. Finally, it moves the class files,
writes a build file, and moves any test files directly associated with the moved production classes.

While not perfect, this task makes it much easier to break apart projects. There are likely some improvements that can be made
to the asm class visitor to better align its api/implementation separation with the dependency analysis plugin, as some of the classes
it considers api classes the dependency analysis plugin considered implementation classes.