💰 Conditional Order Fee Rework

[JaredBorders]

Rework how a fee is calculated and imposed. Introduce a new field to conditional order defining object that represents a max fee that an account is willing to pay for conditional order execution. Change fee to be denominated in ETH. Add

Description

• Rework fee calculation
• Rework how fee is imposed
• Introduce new field to ConditionalOrder: maxExecutorFee
• Introduce ETH Management logic: Engine.depositEth, Engine.withdrawEth, Engine._withdrawEth
• Introduce new events: EthDeposit, EthWithdraw
• introduce new custom errors: InsufficientEthBalance, EthTransferFailed
• Increase test depth
• Add new tests for new logic
• Update Engine.execute and Engine.canExecute to include a fee param
• Improve Engine.canExecute logic to better predict whether an order can be executed (takes into consideration conditional order fees)

Related issue(s)

N/A

Motivation and Context

Improve UX for traders and ensure more precise fees per order executed

[codecov]

Codecov Report

Merging #10 (cd99533) into main (7ac8eb4) will increase coverage by 2.86%.
Report is 16 commits behind head on main.
The diff coverage is 87.50%.

@@            Coverage Diff             @@
##             main      #10      +/-   ##
==========================================
+ Coverage   72.86%   75.73%   +2.86%     
==========================================
  Files           5        5              
  Lines         129      136       +7     
  Branches       26       28       +2     
==========================================
+ Hits           94      103       +9     
+ Misses         28       27       -1     
+ Partials        7        6       -1     

Files	Coverage Δ
src/libraries/ConditionalOrderHashLib.sol	0.00% <ø> (ø)
src/utils/EIP7412.sol	100.00% <100.00%> (ø)
src/Engine.sol	92.30% <86.95%> (+1.68%)	⬆️

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