convert DNI meta model to maven project

MMDNI3/.classpath

MMDNI3/.project

MMDNI3/.settings/org.eclipse.jdt.core.prefs

MMDNI3/bin/.placeholder

MMDNI3/plugin.properties

MMDNI3/plugin.xml

MMDNI3/src-gen/.gitkeep

MMDNI3/test.txt

tools.descartes.dni.core/.gitignore

tools.descartes.dni.core/META-INF/MANIFEST.MF

tools.descartes.dni.core/available-software-sites.xml

tools.descartes.dni.core/build.properties

tools.descartes.dni.core/images/DNI-Integration-phase1.svg

tools.descartes.dni.core/images/SDN-view.pdf

tools.descartes.dni.core/images/SDN-view.svg

...s.descartes.dni.core/images/current-structure-compact.pdf

...s.descartes.dni.core/images/current-structure-compact.svg

tools.descartes.dni.core/images/routing-view.pdf

tools.descartes.dni.core/images/routing-view.svg

tools.descartes.dni.core/model/DNIMM3.xcore