Consider moving UseVersionOption to CommandLineConfiguration and renaming

[jonsequitur]

        // As this is basically the only time "Version" appears, I have literally no idea what this means.
        // If it's equivalent to .Add(new Option("version")), then that'd be "AddVersionOption", since the main verb is "Add".
        public static CommandLineBuilder UseVersionOption(this CommandLineBuilder builder);
        public static CommandLineBuilder UseVersionOption(this CommandLineBuilder builder, string[] aliases);