Adding management of tags in cli

src/main/java/avatartranslator/AvatarBlock.java

src/main/java/avatartranslator/AvatarElement.java

src/main/java/avatartranslator/AvatarSpecification.java

src/main/java/avatartranslator/AvatarStateMachine.java

...main/java/avatartranslator/AvatarStateMachineElement.java

src/main/java/cli/Action.java

src/main/java/cli/Interpreter.java

src/main/java/common/CanBeTagged.java

src/main/java/common/Tags.java

src/main/java/ui/AvatarDesignPanelTranslator.java

src/main/java/ui/GTURTLEModeling.java

src/main/java/ui/TDiagramPanel.java

src/main/java/ui/TGComponent.java