Standalone executable needed for system testing

There already are system tests for binding-parent, but there is much overhead from the processing related to Mdsal code.

In order to measure performance of Yangtools code, a specific system for test is needed (a standalone executable, or a Maven plugin, or a POM parent or a Karaf feature).

Currently no such specific system exists, this Bug tracks its creation.

The system should take folder with yang files, perform yang processing to get EffectiveSchemaContext, log possible errors and exit.