[Rosetta] Use fee estimator in tx construction

[zone117x]

Context from #1295

The Rosetta construction code still uses the legacy fee calculation method of essentially fee = someConstant * tx.byteLength. There's a new-ish RPC endpoint /v2/fees/transaction which can return more accurate fees based on network conditions.

Keep in mind the new fee estimator endpoint can return an error NoEstimateAvailable, in which case the Rosetta code should fallback to the previous estimation logic.

Relevant code at:

stacks-blockchain-api/src/api/routes/rosetta/construction.ts

Lines 408 to 429 in 9593112

	const feeInfo = await new StacksCoreRpcClient().getEstimatedTransferFee();
	if (feeInfo === undefined || feeInfo === '0') {
	res.status(400).json(RosettaErrors[RosettaErrorsTypes.invalidFee]);
	return;
	}
	if (!options.size) {
	res.status(400).json(RosettaErrorsTypes.missingTransactionSize);
	return;
	}
	const feeValue = (BigInt(feeInfo) * BigInt(options.size)).toString();
	const currency: RosettaCurrency = {
	symbol: RosettaConstants.symbol,
	decimals: RosettaConstants.decimals,
	};
	const fee: RosettaAmount = {
	value: feeValue,
	currency,
	};
	response.suggested_fee = [fee];

[smcclellan]

Will not be addressed due to decreased mainteinance on Rosetta.