Add functionality to resize or scale the window

[Garak1999]

I'm asking this since when i play a game such as Hell let loose, i want to be able to align the size of Crossovers crosshair to the scale of the ingame sniper scope, as i was planning on making a custom crosshair that would have range integers represented by lines but the scale of the window is too small for me to be able to recreate it accurately. But even then using the default size you can switch to any of the other crosshairs with ranging but because the window is so small you can't even use them.

In short, the crosshair is so small, that to use it for long range targeting it's unusable, unless there's a feature of your program that i don't know about, I'd like my crosshair to be 1:1 with my monitors resolution, if that's something you could consider working on, let me know.