eth_config prototype

[shemnon]

PR description

A prototype for eth_cofig, sharing operational client configuration data via RPC.

Fixed Issue(s)

Thanks for sending a pull request! Have you done the following?

• [ ] Checked out our contribution guidelines?
• [ ] Considered documentation and added the doc-change-required label to this PR if updates are required.
• [ ] Considered the changelog and included an update if required.
• [ ] For database changes (e.g. KeyValueSegmentIdentifier) considered compatibility and performed forwards and backwards compatibility tests

Locally, you can run these tests to catch failures early:

• [ ] spotless: ./gradlew spotlessApply
• [ ] unit tests: ./gradlew build
• [ ] acceptance tests: ./gradlew acceptanceTest
• [ ] integration tests: ./gradlew integrationTest
• [ ] reference tests: ./gradlew ethereum:referenceTests:referenceTests

[github-actions[bot]]

This pr is stale because it has been open for 30 days with no activity.

[github-actions[bot]]

This pr was closed because it has been inactive for 14 days since being marked as stale.

[siladu]

Reopening as think we should get this in

[jframe]

@shemnon Would you be happy for this to go in as is? We can always update this when the spec is updated.

[shemnon]

I'd feel better if at least one other client had implemented it. But sure, go ahead.

[github-actions[bot]]

This pr is stale because it has been open for 30 days with no activity.