Merge #740: Show own outputs on PSBT signing window

4da243b qt: show own outputs on PSBT signing window (Hernan Marino)

Pull request description:

  This fixes #732 .
  It allows you to identify your own addresses in the outputs of a transaction in the PSBT signing window. This enables easy identification of change outputs, and prevents certain attacks where someone (co-signers of a multisig, or others ) might trick you into signing a transaction while they are stealing the change, since prior to this modification there was no easy way of knowing this.

  The identification of the output is similar to the way this is done in the transaction details window.

  A sample output is :

  ![image](https://github.com/bitcoin-core/gui/assets/87907936/48b8a652-7570-466b-9a34-cc0303c86d8c)

ACKs for top commit:
  achow101:
    ACK 4da243b
  jarolrod:
    ACK 4da243b

Tree-SHA512: fa9901d2acc84472c11afcd0a59a859db598cdf5cea755b492178d3e7434b70d9bd8f554928938a2ff9920c8f397fef814ce14b416556c30fba0c3c1f62cd722

Author: hebasto

src/qt/psbtoperationsdialog.cpp

@@ -182,6 +182,8 @@ std::string PSBTOperationsDialog::renderTransaction(const PartiallySignedTransac
         tx_description.append(tr(" * Sends %1 to %2")
             .arg(BitcoinUnits::formatWithUnit(BitcoinUnit::BTC, out.nValue))
             .arg(QString::fromStdString(EncodeDestination(address))));
+        // Check if the address is one of ours
+        if (m_wallet_model != nullptr && m_wallet_model->wallet().txoutIsMine(out)) tx_description.append(" (" + tr("own address") + ")");
         tx_description.append("<br>");
     }