Convert cglib to be a maven project

Initial basis to convert cglib to be a maven project, I suspect there would be further work needed to ensure this work correctly but hopefully helps.

- Two tests were disabled for now since they relied on a signed jar file.
- Maven needs to be updated to generate sources/javadoc jar files
The jarjar plugin does not support classifiers, therefore it fails to build the artifact when you attempt to use one. Ticket: sonatype/jarjar-maven-plugin/issues/6

Guice automatically embeds cglib and asm by default, you can verify this here: https://repo1.maven.org/maven2/com/google/inject/guice/3.0/