Convert Sveltekit to Webstone App

[Cahllagerfeld]

closes #232

• [x] check for the latest sveltekit version => we shouldn't watch for a specific version I think. We should probably give the latest supported version, that respects the breaking changes from the Kit-Changelog
• [x] adjust unit tests

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: 93530022dc93556e2dc11bc70f38623ec6b54ca3

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
create-webstone-app	Minor

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[mikenikles]

This is no longer needed now that Webstone is an ecosystem of plugins. To add Webstone to a SvelteKit app, you just need to add the Webstone CLI package.