[Pas2js] ARIA live regions support

[Michael Van Canneyt]

On Sun, 13 Sep 2020, Mgr. Janusz Chmiel wrote:

> So in this case, it would be may be better to add The separate ARIA unit or
> similar named.
> It is so good that you are Javascript and also The Pascal expert.
> It is excellent programmers combination.

Maybe a class helper or an interceptor pattern would be useful in this case. 
I will think about a proper solution.

Michael.