message: refactor(utxo-lib): extend WalletUnspent from Unspent
  Issue:
diff: @@ -9,10 +9,7 @@ import { UtxoTransaction } from '../UtxoTransaction';
  import { Triple } from '../types';
  import { toOutput, Unspent } from '../Unspent';
  -export interface WalletUnspent {
  - id: string;
  - address: string;
  - value: number;
  +export interface WalletUnspent extends Unspent {
  index: number;
  chain: number;
  redeemScript?: string;
  