add custome property to ktgridlayoutitem #123
Description
currently there there are below property {id: '3', x: 3, y: 3, w: 3, h: 3, minW: 2, maxW: 3, minH: 2, maxH: 5},
if there is option to add some extra property or object it helps to render the item.
i have tried extend KtdGridLayoutItem, but the events send only KtdGridLayout and not the extended object