feat: Enhance relay with whitelist filtering capability for validator and builder selection

[ckartik]

📝 Summary

This PR integrates mev-commit functionality into the relay, enabling support for mev-commit registered validators and builders.

⛱ Motivation and Context

This enhancement provides a more structured approach to block submission, focusing on whitelist-based validation to support preconfirmation protocols like mev-commit. It constrains block submissions to vetted builders during a validator’s purposing slot if opted into whitelist filtering.

Key changes include:

• New MevCommitClient to interact with mev-commit contracts
• Update Housekeeper to periodically sync mev-commit validator and builder registrations
  • The housekeeper has 2 added duties:
    • Monitor all builder registrations and de-registrations on the mev-commit platform
    • Load all the validators registered in mev-commit that are responsible for proposing a block in the next two epochs
• Modify block submission handling to check mev-commit registration status, and if a validator and builder is opted-in.
• Add Redis caching for mev-commit registration data

📚 References

• mev-commit documentation: Link Here

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✅ I have run these commands

• make lint
• make test-race
• go mod tidy
• I have seen and agree to CONTRIBUTING.md