Add Archiving Appliance EPICS DataSource plugins

DataBrowserPlugins/IrfuPlugin/pom.xml

.../IrfuPlugin/src/main/java/fr/cea/irfu/epics/EpicsKey.java

...lugin/src/main/java/fr/cea/irfu/moonarch/MoonArchKey.java

...java/fr/cea/irfu/moonarch/MoonarchDataSourceProducer.java

...a/fr/cea/irfu/moonarch/MoonarchDoubleArrayDataSource.java

...uPlugin/src/main/java/fr/cea/irfu/muscade/MuscadeKey.java

...a/org/cdma/gui/databrowser/MoonarchDataSourceBrowser.java

...va/org/cdma/gui/databrowser/MoonarchDataSourceSeeker.java