Feat: add blobs to eth history

[allnil]

draft for: #6330

[mattsse]

nice,

we're missing one thing:

title: baseFeePerBlobGasArray
description: An array of block base fees per blob gas. This includes the next block after the newest of the returned range, because this value can be derived from the newest block. Zeroes are returned for pre-EIP-4844 blocks.

Same goes for base_fee_per_gas which we include for the next block:

https://github.com/paradigmxyz/reth/blob/main/crates/rpc/rpc/src/eth/api/fees.rs#L149-L154

https://github.com/paradigmxyz/reth/blob/main/crates/rpc/rpc/src/eth/api/fees.rs#L203-L208

[mattsse]

this looks correct to me

[allnil]

used as a reference:
https://github.com/NethermindEth/nethermind/blob/d6bf96493c11a487e0af69b2c6fba323d1216b05/src/Nethermind/Nethermind.JsonRpc/Modules/Eth/FeeHistory/FeeHistoryOracle.cs#L64

[mattsse]

fyi

reth/crates/primitives/src/header.rs

Line 242 in e085f45

pub fn next_block_blob_fee(&self) -> Option<u128> {

[mattsse]

awesome,
I realize that there's one thing missing here, the base_fee_per_blob_gas for the next block if we're having cached entries.

The FeeEntry currently doesn't have the required data to derive that for the next block

what we can do instead is storing the excess blob gas and the blob gas used in the cache entry

https://github.com/paradigmxyz/reth/blob/main/crates/primitives/src/header.rs#L258-L263

and compute the relevant fields via functions on the cache entry
https://github.com/paradigmxyz/reth/blob/main/crates/rpc/rpc/src/eth/api/fee_history.rs#L351-L351

this way we can also derive the values for the next block
https://github.com/paradigmxyz/reth/blob/main/crates/primitives/src/header.rs#L261-L262

[mattsse]

lgtm