Reorganize tutorial package for refining

.../java/fr/cs/examples/refiningPleiades/GroundRefining.java

...s/java/fr/cs/examples/refiningPleiades/InterRefining.java

...orials/java/fr/cs/examples/refiningPleiades/Refining.java

...finingPleiades/generators/GroundMeasurementGenerator.java

...efiningPleiades/generators/InterMeasurementGenerator.java

...r/cs/examples/refiningPleiades/generators/Measurable.java

...ava/fr/cs/examples/refiningPleiades/generators/Noise.java

...r/cs/examples/refiningPleiades/metrics/DistanceTools.java

...xamples/refiningPleiades/metrics/LocalisationMetrics.java

...va/fr/cs/examples/refiningPleiades/models/OrbitModel.java

...xamples/refiningPleiades/models/PleiadesViewingModel.java