qml: Add QRImage control

Author: goqusan

qml/bitcoin_qml.qrc

@@ -47,6 +47,7 @@
         <file>controls/PageIndicator.qml</file>
         <file>controls/PageStack.qml</file>
         <file>controls/ProgressIndicator.qml</file>
+        <file>controls/QRImage.qml</file>
         <file>controls/qmldir</file>
         <file>controls/SendOptionsPopup.qml</file>
         <file>controls/Setting.qml</file>

qml/controls/QRImage.qml

@@ -0,0 +1,17 @@
+// Copyright (c) 2025 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+import QtQuick 2.15
+
+Image {
+    id: root
+
+    property string code: ""
+    property color backgroundColor: Qt.black
+    property color foregroundColor: Qt.white
+
+    fillMode: Image.PreserveAspectFit
+    smooth: false
+    source: `image://qr/${encodeURIComponent(root.code)}?&fg=${encodeURIComponent(root.foregroundColor)}&bg=${encodeURIComponent(root.backgroundColor)}`
+}

qml/pages/wallet/RequestPayment.qml

@@ -199,6 +199,7 @@ Page {
                             clearRequest.visible = true
                             title.text = qsTr("Payment request #" + requestCounter)
                             address.text = "bc1q f5xe y2tf 89k9 zy6k gnru wszy 5fsa truy 9te1 bu"
+                            qrImage.code = "bc1qf5xey2tf89k9zy6kgnruwszy5fsatruy9te1bu"
                             continueButton.text = qsTr("Copy payment request")
                         }
                     }