remote signer gloas

[james-prysm]

What type of PR is this?

Feature

What does this PR do? Why is it needed?

adds the following types to web3signer

Type	Domain	Signer role
EXECUTION_PAYLOAD_ENVELOPE	DOMAIN_BEACON_BUILDER (0x0B000000)	Builder
PAYLOAD_ATTESTATION_MESSAGE	DOMAIN_PTC_ATTESTER (0x0C000000)	PTC attester
PROPOSER_PREFERENCES	DOMAIN_PROPOSER_PREFERENCES (0x0D000000)	Proposer
BUILDER_REQUEST_AUTH	DOMAIN_BUILDER_REQUEST_AUTH (0x0B000001)	Proposer

Which issues(s) does this PR fix?

implements ethereum/remote-signing-api#28

Other notes for review

Acknowledgements

• I have read CONTRIBUTING.md.
• I have included a uniquely named changelog fragment file.
• I have added a description with sufficient context for reviewers to understand this PR.
• I have tested that my changes work as expected and I added a testing plan to the PR description (if applicable).

[james-prysm]

#17063 make sure to implement request auth too

[syjn99]

I think EXECUTION_PAYLOAD_BID is missing here (it's in PR description) - do we have to implement in Prysm side?

[syjn99]

Anyway I couldn't find any divergence between spec and the implementation, and most of the code follows the existing pattern so LGTM