[4/?] StaticAddr: Instant deposit withdrawals

[hieblmi]

This PR enables instant withdrawals of funds at static address deposits, allowing the client to omit the CSV timeout period of their Musig2 outpoints and cooperatively spend selected deposit outpoints cooperatively with the server.

Withdrawing can be done for selected or all eligible deposits. Examples:

Selected deposit:

loop --network=regtest s withdraw --utxo 0b879cb14939f98ad359063d60e648b3db72a1dc32bf9a1fbafa1a0d87ec1db:0

All deposits:

loop --network=regtest s withdraw --all