feat: async boundary option

[ScriptedAlchemy]

Description

add asyncBoundary option to federation plugin interface

This internally enables the automatic async boundary plugin, allowing it to be enabled without manually doing so.

Allows apps to be imported synchronously without getting eager error or call of undefined when not using a async import in the entrypoint.

Related Issue

N/A

Types of changes

• [ ] Docs change / refactoring / dependency upgrade
• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] 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.