svelte: allow class to be an array, for clsx support

[mustafa0x]

Package

• [ ] lucide
• [ ] lucide-angular
• [ ] lucide-flutter
• [ ] lucide-preact
• [ ] lucide-react
• [ ] lucide-react-native
• [ ] lucide-solid
• [X] lucide-svelte
• [ ] lucide-vue
• [ ] lucide-vue-next
• [ ] Figma plugin
• [ ] all JS packages
• [ ] site

Description

See https://svelte.dev/blog/advent-of-svelte#Day-24:-clsx-built-in

So that I'm able to do something like:

<ChevronUp
    size={20}
    class={[
        'transition-transform duration-200',
        open && 'rotate-180',
    ]}
/>

Use cases

more expressive code

Checklist

• [X] I have searched the existing issues to make sure this bug has not already been reported.