Change class name for using Efl.Ui namespace.
Since this class is being added to the new API, let's take the chance to improve the docs a little bit :)
So must be called before @Efl.Ui.Animation_View.file_set
I update some docs.
I can't use @Efl.Ui.Animation_View.file_set. it occur to 'failed validating reference' error.
Maybe, eolian docs can't find name of interface method.
Sorry, the right reference is @Efl.File.file.set.