api: Impl eth_config JSON-RPC Method

[Mdaiki0730]

Proposed changes

This PR implements the eth_config JSON RPC endpoint defined in KIP-276.

Includes some implementations of eth.

related PRs

• internal/ethapi,params: add eth_config ethereum/go-ethereum#32239
• core/forkid: implement the forkid EIP, announce via ENR ethereum/go-ethereum#19738

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