Add 'reduce' method to QML list type

import QtQuick
import QtQuick.Controls
import QtQuick.Layouts

ApplicationWindow {
    width: 640
    height: 480
    visible: true

    ColumnLayout {
        anchors.fill: parent

        Component.onCompleted: {
            var words = [ "Hello", "World"];
            function stringLengthReducer(prev, curr) {
                return prev + curr.length;
            }
            console.log("Array [\"Hello\", \"World\" length: " + words.reduce(stringLengthReducer, 0));
            function textTextLengthReducer(prev, curr) {
                return prev + curr.text.length;
            }
            var childrenTextLengthSum = children.reduce(textTextLengthReducer, 0);
            console.log("Sum of lengths of Text children text strings: " + childrenTextLengthSum);
        }

        Text {
            text: "Hello"
        }
        Text {
            text: "World"
        }
    }
}