feat: add getAuxiliaryNativeTokenCost to QueryInterface

[grasphoper]

To account for native token cost, like value_amount in SVM Spoke

We don't rely on TX simulation, but rather rely on contract enforcing the fixed relayer native token spend when passing in the value_amount as a part of AcrossPlusMessage

[grasphoper]

@dohaki noticed that updates to relayerFeeDetails are missing. Looking into that now

[grasphoper]

@fusmanii @bmzig please take a look, I added some changes since you guys last reviewed. In particular, RelayFeeCalculator.relayerFeeDetails changed to reflect the new aux native fee changes.

Notice also that this introduced a breaking change to the RelayFeeCalculator.gasFeePercent, which is why the tests broke. I checked relayer and frontend codebases though and they weren't using this function directly so no changes are needed there with regards to this breaking change.