Adding support for notes in avatarspec block diagram

modeling/AVATAR/CoffeeMachine_Avatar.xml

src/main/java/avatartranslator/AvatarNote.java

src/main/java/avatartranslator/AvatarSpecification.java

src/main/java/ui/AvatarDesignPanelTranslator.java

src/main/java/ui/AvatarPanelDrawer.java