Tabs preview only when key is held

[maanemann]

Hi, thanks for developing Sidebery, it has been an important part of my life for a while now:)

I recently toggled on the 'tabs preview' and quite like the experiemental 'window' preview mode. Though sometimes it's a bit annoying, when i just hover over the tabs and don't have any interest in seeing the preview. It does take a bit of CPU, and sometimes i accidentally alt+tab into it, before it disappears (i get that it's experimental).

So an option to only activate it when holding down a configured key, such as ctrl (like in Obsidian), would be cool.

Thanks for the time you put in this!