Hyprtrails: multiple monitor support

[arminius-smh]

Hey, right now, if you drag a window to another monitor, the trail just disappears, I think it would look way nicer if the trail would stay on both monitors and fade out. It seems like the shader is actually still computed on every monitor when moving windows across monitors, as is noticeable when you quickly move windows to and from a monitor. So maybe it's possible to have the effect just linger on all monitors?

https://github.com/hyprwm/hyprland-plugins/assets/159054879/357f23dc-fa5f-47d3-b50d-ad9fd37fff13