add sveltekit entry patterns

[thenbe]

This PR's adds more sveltekit entry patterns:

1. sveltekit's two optional hooks files
2. param matchers

Before this PR, knip reports the files as "unused files" (if they exist).

Additionally, I've expanded the pattern for vite.config.* (to help with this workaround: #346 (comment))

[vercel]

Someone is attempting to deploy a commit to a Personal Account owned by @webpro on Vercel.

@webpro first needs to authorize it.

[webpro]

Thanks @thenbe! Happy to merge this.

Two remarks:

• Any chance you can add one or two matching files to the svelte fixture? To verify they're no longer unused.
• This PR reminds me of the vite plugin, maybe we can import the CONFIG_FILE_PATTERNS from that plugin (it's slightly more extensive) and merge it into this one?

[thenbe]

Importing from the vite plugin does feel better.

I added fixture files with minimal content. Let me know if you prefer them to be empty instead.

[webpro]

Oh if you'd want to empty them that would be great! 🙏 I wanted to clear more out in other fixtures, it's mostly noise for Knip.

[webpro]

Thanks @thenbe! Much appreciated ❤️

[webpro]

🚀 This pull request is included in v3.8.2. See Release 3.8.2 for release notes.

[webpro]

Btw it's also here: https://knip.dev/reference/plugins/svelte

[webpro]

🚀 This pull request is included in v4.0.0. See Release 4.0.0 for release notes.