Use bip322 to build pop through bitcoind

[KonradStaniec]

ref: https://github.com/babylonchain/pm/issues/48

One of the steps to remove to remove DumpPrivateKey from codebase:

• build pop using bip322 function
• change AddressPublicKey to use GetAddressInfo endpoint

Next step will be to switch all taproot signing methods to use psbt's.