Extend EthChainSpec trait

[mattsse]

in order to do #10751 we need to expand

reth/crates/chainspec/src/api.rs

Line 6 in 639d5a8

pub trait EthChainSpec: Send + Sync + Unpin + Debug + 'static {

we can do something similar to:

reth/crates/ethereum-forks/src/hardforks/ethereum.rs

Line 7 in 639d5a8

pub trait EthereumHardforks: Hardforks {

and

reth/crates/ethereum-forks/src/hardforks/optimism.rs

Line 4 in 639d5a8

pub trait OptimismHardforks: EthereumHardforks {

but for EthChainSpec

the EthChainSpec trait should include all functions of:

reth/crates/chainspec/src/spec.rs

Line 231 in 639d5a8

impl ChainSpec {

imo the best way to do this is

• introduce the traits and impl for ChainSpec
• then relax default types and replace with trait (gradually)
• once we have that, we can finally separate ChainSpec into struct EthChainspec and OpChainSpec
• then we can also finally get rid of the dyn hardforks stuff