add some svg to javadoc
Basic svg generated for the javadoc using https://github.com/talsma-ict/umldoclet
the integration is not completely clean (maybe because of the java modules) and requires a small hack to move the generated images to the correct folder.
Additionnaly, these images aren't directly embedded in the javadoc so it require to add <img src="NAMEOFTHECLASS.svg ...
information in all the files (and images aren't clickable)
However, this is much better than the simple javadoc