Implement provider.getFeeData()

[Muhammad-Altabba]

I suggest to implement provider.getFeeData() similar to https://docs.alchemy.com/reference/sdk-getfeedata and https://docs.ethers.org/v6/single-page/#Provider-getFeeData.

From Alchemy API Reference:

Returns the recommended fee data to use in a transaction. For an EIP-1559 transaction, the maxFeePerGas and maxPriorityFeePerGas should be used.

For legacy transactions and networks which do not support EIP-1559, the gasPrice should be used.

And deprecate getGasPrice (check ethers-io/ethers.js#2439 (reply in thread))

Helpful references:

• https://www.quicknode.com/guides/ethereum-development/transactions/how-to-send-an-eip-1559-transaction
• https://ethereum-magicians.org/t/eip-1559-fee-market-change-for-eth-1-0-chain/2783/310

[Muhammad-Altabba]

And update the documentation according to this. Like in this place and all similar places: https://docs.web3js.org/guides/basics/eth/#eip-1559-transaction

Also look at getFeeHistory.