refactor(editor): separate editor and frontend

[elbotho]

• removes last frontend imports from editor
• removes unused packages in both editor and frontend
• removes import aliases
• cleanup

[vercel]

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Name	Status	Preview	Updated (UTC)
frontend	✅ Ready (Inspect)	Visit Preview	Oct 23, 2024 1:57pm

[github-actions]

📦 Next.js Bundle Analysis for @serlo/frontend

This analysis was generated by the Next.js Bundle Analysis action. 🤖

Twelve Pages Changed Size

The following pages changed size from the code in this PR compared to its base branch:

Page	Size (compressed)	First Load
/___editor_preview	529.42 KB (🟢 -85 B)	634 KB
/___exercise_folder_dashboard/[id]	47.97 KB (🟡 +731 B)	152.55 KB
/editor	79.61 KB (🟢 -14 B)	184.19 KB
/entity/create/[type]/[taxonomyId]	549.49 KB (🟢 -87 B)	654.07 KB
/entity/repository/add-revision/[...id]	549.22 KB (🟢 -87 B)	653.8 KB
/metadata	50.8 KB (🟢 -131 B)	155.38 KB
/page/create	549.21 KB (🟢 -87 B)	653.79 KB
/taxonomy/term/create/[parent_id]/[id]	548.96 KB (🟢 -87 B)	653.54 KB
/taxonomy/term/sort/entities/[id]	97.78 KB (🟡 +11 B)	202.36 KB
/taxonomy/term/update/[id]	548.91 KB (🟢 -87 B)	653.49 KB
/team	48.91 KB (🟢 -125 B)	153.49 KB
/user/settings	550.91 KB (🟢 -87 B)	655.49 KB

Details

Only the gzipped size is provided here based on an expert tip.

First Load is the size of the global bundle plus the bundle for the individual page. If a user were to show up to your website and land on a given page, the first load size represents the amount of javascript that user would need to download. If next/link is used, subsequent page loads would only need to download that page's bundle (the number in the "Size" column), since the global bundle has already been downloaded.

Any third party scripts you have added directly to your app using the <script> tag are not accounted for in this analysis

Next to the size is how much the size has increased or decreased compared with the base branch of this PR. If this percentage has increased by 20% or more, there will be a red status indicator applied, indicating that special attention should be given to this.

[hejtful]

Unrelated to this PR probably, but this looks like a wrong import. It's importing cn from the editor, even though we have one in web.

[hejtful]

Nice that there's already a Linear issue for this! <3