Show an item preview next to the selected item in tray menu

**The feature request is**: A mini preview next to the copy q trey popup selected item.

**For example** I hit "K" or maybe "F7" while the trey menu pop up is on. Then it will bring a preview of the current selected item.

**The idea is similar** to checking the definition of a function in your LSP inside VS code or nvim where you hit "K" and you are presented with a Hover pop up without needed to go all the way to the actual definition of the function.

**Additional context**:
I find myself constantly using this copyq trey menu pop-up. Very rarely go to the workspace where I have copyq main window open. and I mainly just use that to preview the current few items. And ofc the F7 when needing a full preview.

95% of the time I use copy-q trey. It would be really handy to have a mini-preview. Just a tiny QoL if it can be implemented that would be great.