GenericAnnotatedComposer uses annotation to control whether to write zscript and XEL variables

It is better not to maintain _ignoreZScript and _ignoreXel. Rather, use the annotation to control.

There are two possible solutions
1) Class-level annotation to turn it on
2) It is a special wire in parallel of the wiring by selector. For example, @Wire(Variable) (and then it looks for both zscript and XEL – no need to control them separately since, if so, it is harder to use)