public static boolean addAction(PluginTool tool, DockingAction action) {
		if (storedTool != null || storedAction != null) {
			return false;
		}
		storedTool = tool;
		storedAction = action;
		Swing.runNow(() -> {
			storedTool.addAction(storedAction);
		});
		return true;
	}
add {@code action} to {@code tool} and store both to remove later.

Note: this can be used exactly once per bundle lifecycle, i.e. between start & stop.

@param tool the tool to add {@code action} to 
@param action the action to add to {@code tool}
@return false if this add operation has already been performed
Ghidra/Extensions/bundle_examples/scripts_with_activator/internal/MyActivator.java