Scene Builder Kit can't be used in modular projects

[jperedadnr]

Scene Builder Kit is not modular (see #240 ), and adding it to another JavaFX project only works for non-modular projects.

For modular projects, it produces this exception:

Exception in Application constructor
java.lang.reflect.InvocationTargetException
        at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:118)
...
        at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1164)
Caused by: java.lang.RuntimeException: Unable to construct Application instance: class com.gluonhq.embeddeddemo.HelloApplication
        at javafx.graphics@23/com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:883)
        at javafx.graphics@23/com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:196)
        at java.base/java.lang.Thread.run(Thread.java:1575)
Caused by: java.lang.reflect.InvocationTargetException
        at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:74)
        at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:501)
...
        at javafx.graphics@23/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
Caused by: java.lang.ExceptionInInitializerError
        at [email protected]/com.oracle.javafx.scenebuilder.kit.editor.EditorController.<init>(EditorController.java:267)
        at [email protected]/com.gluonhq.embeddeddemo.HelloApplication.<init>(HelloApplication.java:87)
        at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62)
        ... 8 more
Caused by: java.lang.UnsupportedOperationException: ResourceBundle.Control not supported in named modules
        at java.base/java.util.ResourceBundle.checkNamedModule(ResourceBundle.java:1538)
        at java.base/java.util.ResourceBundle.getBundle(ResourceBundle.java:902)
        at [email protected]/com.oracle.javafx.scenebuilder.kit.i18n.I18N.getBundle(I18N.java:58)
        at [email protected]/com.oracle.javafx.scenebuilder.kit.i18n.I18N.getString(I18N.java:47)
        at [email protected]/com.oracle.javafx.scenebuilder.kit.library.BuiltinLibrary.<clinit>(BuiltinLibrary.java:73)
        ... 11 more

Expected Behavior

Scene Builder (kit and app) should be modular, and ResourceBundle.Control should be removed in favour of the modular resource provider approach.