feat: Add the SkFallback Svelte component

[webJose]

No description provided.

[Copilot]

Pull Request Overview

This PR adds a new SkFallback Svelte component that wraps the Fallback component from the @wjfe/n-savant library, adding browser environment checking to the fallback logic.

• Introduces a new Svelte component that conditionally renders fallbacks based on browser environment
• Exports the new component from the library's main index file

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/lib/index.ts	Exports the new SkFallback component
src/lib/SkFallback.svelte	Implements the SkFallback component with browser-aware fallback logic

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