Set EOA account code

EIP-7702 introduces a new transaction type that allows an Externally Owned Account (EOA) to temporarily adopt smart contract code for a single transaction. This enables account abstraction features like batched transactions, gas sponsorship, and custom validation logic without requiring users to migrate to smart contract wallets. Key changes: • New transaction type (0x04) with authorization tuples • EOAs can delegate to any code address • Delegation is temporary (single transaction) • Maintains backwards compatibility with existing infrastructure

For Validators: • No changes to block production or validation logic • May see increased transaction complexity • No changes to slashing conditions For Node Operators: • Update client software to support new tx type • No changes to hardware requirements • Minimal impact on sync times