Key Reset transaction cost must be 0

[ckeshava]

The client libraries do not account for special transaction costs of the SetRegularKey transaction. Check this page: https://xrpl.org/docs/concepts/transactions/transaction-cost#special-transaction-costs

At the moment, I believe the reference-transaction-cost of 10 drops will be included with Key Reset transactions. I don't have a test case to prove the behavior.

This special transaction needs to be included in both xrpl-py and xrpl.js libraries.

[ckeshava]

This is the culprit function: https://github.com/ckeshava/xrpl-py/blob/f182eadc10aa1995cf82aaedff14216fd565ec2d/xrpl/asyncio/transaction/main.py#L424

There's a similarly named function in xrpl.js as well