Log4j Boot modules for easy dependency management

Create what is essentially Log4j Boot for adding necessary dependencies to support the various plugins while at the same time promoting the use of log4j-api as a general purpose logging API standard. These modules would categorise all the various natural dependency barriers for a sort of pseudo module system that could also help in any necessary module metadata needed to support Java 9 and OSGi, categorise integration style unit tests to help test the starters themselves in an automated way, and organise the site in such a way as to make it easier to integrate different git repositories as we modularise the core in general.