refactor: update imports from bdk to bdk_wallet

refactor: update imports from bdk to bdk_wallet

- replace `list_transactions` method  with
`transactions`
- format `recipients` to be a vec of `ScriptBuf`
and `Amount`
- update creating and serializing `Psbt`s
- update `fee_rate` method and default to
`FeeRate::BROADCAST_MIN`
- replace `allow_shrinking` method with `drain_to`
method
- update `handle_offline_wallet_subcommands` to
use `PersistedWallet<D>` instead of `Wallet<D>`
[Ticket: X]