feat(nextjs-mf): App Router

[ScriptedAlchemy]

Dont get excited - it seems to work but is on the backburner till Vercel wants to collaborate on first class support

This branch mostly is for me to test out Federation Layers, since there is some shared overlap in functionality between what needed to support app router and what i need for other projects at work.

Description

Preliminary support for module sharing in App Router

Related Issue

Types of changes

• Docs change / refactoring / dependency upgrade
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

Checklist

• I have added tests to cover my changes.
• All new and existing tests passed.
• I have updated the documentation.

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Latest commit: d25ff57

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[mjansrud]

Hard to not get excited! Great work so far—fingers crossed for first class support from Vercel!

[Capricair]

Yeah, hard to not get excited! We need it!