Adding plugin for graphical component: example

...luginGraphicalComponent/CustomizerGraphicalComponent.java

src/main/java/myutil/Plugin.java

src/main/java/ui/ComponentPluginInterface.java

src/main/java/ui/GTURTLEModeling.java

src/main/java/ui/MainGUI.java

src/main/java/ui/TAction.java

src/main/java/ui/TDiagramPanel.java

src/main/java/ui/TGComponentManager.java

src/main/java/ui/TGComponentPlugin.java

src/main/java/ui/TGUIAction.java

src/main/java/ui/TToolBar.java

src/main/java/ui/avatarbd/AvatarBDBlock.java