Added UI integration for camera and fixed other hardware units.

org.fortiss.af3.platform.raspberry.ui/plugin.xml

...c/org/fortiss/af3/platform/raspberry/ui/editpart/.ratings

...orm/raspberry/ui/editpart/RaspberryPiEditPartFactory.java

.../org/fortiss/af3/platform/raspberry/ui/prototype/.ratings

...af3/platform/raspberry/ui/prototype/ProtoypeProvider.java

...y/src/org/fortiss/af3/platform/raspberry/compose/.ratings

...af3/platform/raspberry/compose/RaspberryPiCompositor.java

...erry/src/org/fortiss/af3/platform/raspberry/util/.ratings

...platform/raspberry/util/RaspberryModelElementFactory.java