Update for Svelte 5

[burggraf]

I see that Svelte 5 was officially released this past weekend and that the migration to Svelte 5 is well under way. But at this point, if I want to start a new project using Svelte 5 and Shadcn-Svelte, should I:

• continue to use the current version of shadcn-svelte (I was using it successfully with the pre-release versions of svelte 5)
• wait for a new shadcn-svelte release?

Also, do you need anybody to test the new Svelte 5 stuff you're doing? Happy to be a guinea pig here.

[burggraf]

Or should we install from the next branch?