Feature request: LayoutGroup

LayoutGroup { id: col1 }
LayoutGroup { id: col2 }

ListView {
    model: 20
    delegate: Row {
        width: parent.implicitWidth
        Text {
            text: "..."
            Layout.group: col1
            width: col1.implicitWidth
        }
        Text {
            text: "............"
            Layout.group: col2
            width: col2.implicitWidth
        }
    }
}