a simple crosshair overlay for wayland! requires wlr_layer_shell, check if your compositor supports that at https://wayland.app/protocols/wlr-layer-shell-unstable-v1#compositor-support install by running: `cargo install --git https://git.xunuwu.xyz/xun/crosshair-overlay` usage: run crosshair-overlay while in a directory with a file called crosshair.png containing the crosshair you want to use