Add support for Wayland

[chibby0ne]

I used this tool all the time in i3, and I recently moved to Sway and noticed that the screenshots taken are completely black. That's when I realized escrotum only supports X. It would be nice to have support for Wayland though since it is getting more mainstream lately.

[Roger]

This will need a major rewrite, because this tool depends on X apis

[chibby0ne]

Oh ok... so is that for version 2.0?