chore(sveltekit): update SvelteKit example

[oekazuma]

Description

• Updated SvelteKit example
• Added Tailwind CSS example for SvelteKit

Additional context

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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[tkreek]

Were you able to get tailwinds working in this demo? For me, Taiwinds gets imported in the design system tab but none of the svelte components render with it.

[oekazuma]

Hmmm... It may not work well. I will close and resubmit this PR once.