Add some documentation for using stimulus with typescript

[alexander-schranz]

This PR add some basic documentation for using stimulus with typescript. It also documents the changes of #529 how define the type of this.element.

[marcoroth]

Thanks @alexander-schranz!

[alexander-schranz]

Thx for merging :). Does stimulus follow a specific release cycle? Or do you know if any release is planned?

[BuddyLReno]

I second this. Would really love to get this into my project!

[misterhtmlcss]

@BuddyLReno @alexander-schranz I was just thinking the same thing, but I wonder if DHH is soaked with strada and that's why the bottle next to release is the way it is.... So maybe the issue will resolve itself once Strada is out. Fingers Crossed.

[marcoroth]

Stimulus and Turbo are kinda following the same release schedule. Since the next minor Turbo release is not quite ready yet means that Stimulus also hasn't gotten a release.

There are a few things open which hold back a new Stimulus release. But it might just make sense to push out a 3.0.2 version with the few changes we have since the last release.

[dhh]

I've deployed the documentation changes from here. Now live at https://stimulus.hotwired.dev/reference/using_typescript/

[alexander-schranz]

@dhh Thank you! The generic part only works when the already merged #529 is released.

[dhh]

Ah. Should probably have split those out in separate PRs, then.