Building on top of the `sebas/osd` branch, this change introduces a special OSD that appears when a previously unknown monitor is connected and allows users to choose what should KScreen do with this screen.
This is what it looks like currently:
{F5557494}
Not tested on Wayland yet, but all the relevant Wayland code is already on `sebas/osd` branch and this patch is targeted to land on this branch, I'll focus on making sure the entire branch with the other OSDs afterwards.