Rewrite header names on propagate to subgraphs

[PeteMac88]

Component(s)

router

Is your feature request related to a problem? Please describe.

The migration from apollo to wundergraph requires changes to the applications. I think its better to provide similar configuration possibilities as the apollo router/gateway

Describe the solution you'd like

Extend the header configuration to be able to rename a header when propagating it to subgraphs.

Describe alternatives you've considered

No response

Additional context

No response

[github-actions]

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[StarpTech]

Hi @PeteMac88, good feedback. Could you elaborate a bit on your case?

[StarpTech]

Closed in favor of #604