feat(rpc): add impls for gasprice and max priority fee

[mattsse]

ref #2470

🤖 Generated by Copilot at d270c85

This pull request adds support for the EIP-1559 fee market and dynamic fee transactions to the RPC API, and refactors some of the block-related methods and types. It introduces a new eth_maxPriorityFeePerGas RPC method, and implements the gas_price and suggested_priority_fee methods for the EthFeesApi trait. It also splits the block method of the EthApi trait into header and block, and adds a rpc_block method that returns a full RPC block object. Additionally, it implements the From<SealedBlock> trait for the Block type, which simplifies the conversion of blocks from different sources.

adds impl of eth_gasPrice, ref: https://github.com/ethereum/go-ethereum/blob/8f373227ac481685148019b21ef9e1478d3ba609/internal/ethapi/api.go#L62-L72

and a shim for max priority fee which is implemented here

https://github.com/ethereum/go-ethereum/blob/8f373227ac481685148019b21ef9e1478d3ba609/eth/gasprice/gasprice.go#L144-L150

ref ethereum/pm#328 (comment)

[codecov-commenter]

Codecov Report

Merging #2471 (81d225e) into main (ebf13ec) will increase coverage by 0.05%.
The diff coverage is 70.00%.

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@@            Coverage Diff             @@
##             main    #2471      +/-   ##
==========================================
+ Coverage   71.62%   71.67%   +0.05%     
==========================================
  Files         487      487              
  Lines       60520    60550      +30     
==========================================
+ Hits        43346    43401      +55     
+ Misses      17174    17149      -25     

Flag	Coverage Δ
integration-tests	18.13% <70.00%> (+0.02%)	⬆️
unit-tests	66.61% <0.00%> (+0.02%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
crates/primitives/src/block.rs	78.82% <0.00%> (-0.47%)	⬇️
crates/rpc/rpc-api/src/eth.rs	100.00% <ø> (ø)
crates/rpc/rpc/src/eth/api/block.rs	75.80% <50.00%> (-9.62%)	⬇️
crates/rpc/rpc/src/eth/api/fees.rs	88.48% <100.00%> (+0.98%)	⬆️
crates/rpc/rpc/src/eth/api/server.rs	98.15% <100.00%> (+0.01%)	⬆️

... and 6 files with indirect coverage changes

[gakonst]

LGTM - we can do in follow-up, this unblocks fork testing with Foundry