feat: add <SliceSimulator> component

[lihbr]

Resolves: https://prismic-team.slack.com/archives/CPG31MDL1/p1767962753033489

Related:

• chore: maintain package slice-simulator#19
• feat: add <SliceSimulator> component prismic-next#120
• feat: add <SliceSimulator> component #90
  • feat: add <SliceSimulator> component nuxt-modules/prismic#237
• feat: add <SliceSimulator> component prismic-svelte#40

Description

This pull request regroups the <SliceSimulator> component initially offered by Slice Machine adapters under their respective framework SDK. Behavior is strictly identical and allows Slice Machine adapters to become pure dev dependencies.

- import { SliceSimulator } from "@slicemachine/adapter-nuxt/simulator"
+ import { SliceSimulator } from "@prismicio/vue" // Not even required with Nuxt!

Checklist

• If my changes require tests, I added them.
• If my changes affect backward compatibility, it has been discussed.
• If my changes require an update to the CONTRIBUTING.md guide, I updated it.

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