Combine test and prod modules

We should combine the prod and test modules. These were initially separate to provide generous defaults and free reign for test use cases. But it added a lot of repetition since the implementation also required an internal folder for each module. We can accomplish the same explicit declaration of support through the prod min_support field by adding a none value (effectively test).

Some modules will still want to use an internal folder for more complex structures, but it would no longer be required.

See !101 (comment 2078005598)

Steps to flatten all the modules:

Edited by Davis Bickford