plein écran en libgdx lwjgl3

// Reference https://github.com/libgdx/libgdx/issues/4785#issuecomment-886230133

config.setAutoIconify(true);
config.setFullscreenMode(Lwjgl3ApplicationConfiguration.getDisplayMode());
// Where config is an instance of Lwjgl3ApplicationConfiguration
// made when creating a Lwjgl3Application in backends.
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