[Quais] - Integrate with Core endpoint for estimated gas and estimated base fee

[mibuono]

Integrate with the Core endpoint for reading the estimated gas and estimated base fee.

Need the get the base fee in the unit that you're interested in. Base fee should be overloaded to return one or the other.

[rileystephens28]

Estimate Gas
The current version of go-quai-libp2p overloads the quai_estimateGas rpc method, therefore there is no additional work to do for quais.

Base Fee
The current version of go-quai-libp2p overloads the quai_baseFee rpc method, however, the Qi implementation is incomplete.
In quais, the base fee is currently calculated based on the base fee from the previous block, this needs to change to call the available quai_baseFee rpc method. This will require adding getBaseFee to the methods switch case in

Must modify the AbstractProvider.getFeeData method to accept a txType (0/1 or boolean type can be used) input param that will be passed along to the quai_baseFee rpc call. The txType param will determine whether the base fee is returned in units of quai (Wei or whatever the quai equivalent is) or qi (Qit)

[rileystephens28]

This will be in review until we get the QIP 2 implementation merged