Mark Quartz extension as stable

[gastaldi]

This promotes the extension status from preview to stable

[gsmet]

Probably a good idea to check with @mkouba before promoting it.

[gastaldi]

Thanks @gsmet, I fixed the commit message too 😉

[geoand]

Makes sense to me, but let's let @mkouba and @machi1990 weigh in here

[machi1990]

+1 on my side.

The API has been stable for quite some time now.

On top of the change in the extensin config yaml, we'll also need to remove the preview status from the doc: https://github.com/quarkusio/quarkus/blob/main/docs/src/main/asciidoc/quartz.adoc.

Good for me but let's wait Martin's opinion on this.

[gsmet]

@mkouba we waited for you on this one :).

[mkouba]

@mkouba we waited for you on this one :).

@gsmet I'm personally +0 on this one. It's true that our API can be considered stable but there are some Quartz features which are not extensively tested (such as clustering) and thus our support is "limited".

OTOH if @machi1990 thinks that it's stable then I'm in as well :-)

[gsmet]

OK, let's proceed then.

Addressed.

[gsmet]

I decided to revert that for now, pending we have a clear status about Quartz + Jakarta.