fix(adapter-nuxt): nuxt 3.8 compatibility (DT-1709)

[lihbr]

Context

Nuxt 3.8.0 released last week turns TypeScript verbatimModuleSyntax on to accommodate some upstream requirements from Vue.js, see the release note "Type import changes" section: https://github.com/nuxt/nuxt/releases/tag/v3.8.0

Fixes: DT-1709

The Solution

Update Nuxt 3 templates to import Content as a type:

- import { Content } from "@prismicio/client";
+ import { type Content } from "@prismicio/client";

How to QA

1. Get a Nuxt 3.8.0 project up and running with the latest Slice Machine alpha
2. Create a slice
3. Check created slice component, it should have no errors inside it.

Impact / Dependencies

Starters have been updated

Checklist before requesting a review

• I hereby declare my code ready for review.
• If it is a critical feature, I have added tests.
• The CI is successful.
• If there could backward compatibility issues, it has been discussed and planned.

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Updated (UTC)
slice-machine	✅ Ready (Inspect)	Visit Preview	Oct 24, 2023 4:17pm

[linear]

DT-1709 AAUser, I want Nuxt TypeScript templates to be working with Nuxt v3.8.0

https://github.com/nuxt/nuxt/releases/tag/v3.8.0

[bapmrl]

💡 When there are only type imports you can also write: import type { Content } from "@prismicio/client.

[lihbr]

I agree, however since people might want to import other things from @prismicio/client I figured it might be better off this way? No real opinion~