feat: operator fee scalar fix

[yuwen01]

This is the current operator fee formula.

operatorFee = operatorFeeConstant + operatorFeeScalar * gasUsed / 1e6

The 1e-6 multiplier on the operatorFeeScalar is not useful for operators as it results in a fee that is too low to be useful. This design doc proposes the following change to the operator fee formula.

operatorFee = operatorFeeConstant + operatorFeeScalar * gasUsed * 10

With the new fee formula, here are some examples of some possible fees being charged.
For the dollar cost column, we assume an ETH price of 2.5k.

Gas Used	operatorFeeScalar	operatorFeeScalar * gasUsed * 100	Dollar Cost
30,000,000	1	3 gwei	$0.0000075
30,000,000	2^32	1.29e10 gwei	$32,250.00
1,000,000	1	0.1 gwei	$0.00000025
1,000,000	2^32	4.29e8 gwei	$1,072.50

Fixes ethereum-optimism/optimism#16623

[tynes]

Could you add some additional fields to the table that make it easy to see how much USD is charged? ie an ETH/USD assumption and then a USD fee charged. This will help to make sure that the thing that impacts the end user is accounted for

[tynes]

Do you mind calling out the parts of the codebase that will need to change? I believe no change to SystemConfig or L1Block given that the type for the scalar isn't changing, there is a change to the GasPriceOracle and the fee charging logic in the state transition function

[geoknee]

We got good alignment on the review call. Just need to update the table and then we can merge the PR (ratify it).