How to Add the Ed448-Goldilocks elliptic curve to the project

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### Description

I would like to explore the possibility of adding the Ed448-Goldilocks elliptic curve support to the go-libp2p project. This would be a significant change and has the potential to enhance the security and performance of the project. I would appreciate guidance and assistance on how to make this enhancement.

### Requested Changes

I would like to understand the necessary steps to add the Ed448-Goldilocks elliptic curve to the go-libp2p project. This may include modifications to cryptographic libraries, code changes, and any other related adjustments.

### Questions

1. Could you provide guidance on the codebase files that would need modification for this transition?
2. Are there any compatibility concerns or potential breaking changes this might introduce?

### Additional Information

Please provide any additional context, recommendations, or relevant information related to this elliptic curve change that would help me better understand the process.

Thank you for your assistance and support in considering this change. I'm looking forward to your guidance and expertise on this matter.

The issue names no files, tests, or entry points and asks for guidance on a broad cryptographic addition. Start by locating the project's existing cryptographic key and curve integration, then identify affected libraries and compatibility constraints. Done would require an agreed design, an inventory of impacted files and tests, and a clear assessment of breaking changes.

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