they are not services and made more sense with simpler, shorter names

ServiceInitializer and Services collection no longer exist and have been
replaced by Guice dependency injection.
Added comments and improved testability.
Maven verify now runs - almost ready for CI (issues with keytool maven
plugin)

properties file

and the test parses the GUID as expected

with integration tests (specifically the metadata.keystore file &
keystore plugin), but int tests are otherwise loading Guice
dependency-injected instances correctly.

similar and could easily be performed inside of the repository module

todo: add more parser functionality around astnode specifically around
partitions, drops, updates and alters

Repository systems

Initial project code with maven modules and basic repository code. Contributed by Venkatesh Seetharam