sway: Add keybind for screenshotting using grim + slurp

Signed-off-by: Christoph Heiss <christoph@c8h4.io>

sway/config

@@ -8,6 +8,7 @@ set $term alacritty
 set $menu wofi --show drun --insensitive | xargs swaymsg exec --
 set $lock swaylock
 set $exit swaynag -t warning -m 'Exit sway?' -B 'Yes, exit' 'swaymsg exit'
+set $screenshot grim -g "$(slurp)"
 
 set $vienna_lat 48.2
 set $vienna_long 16.4
@@ -47,6 +48,7 @@ default_border none
 bindsym $mod+Return exec $term
 bindsym $mod+u exec $menu
 bindsym $mod+l exec $lock
+bindsym $mod+c exec $screenshot
 bindsym $mod+Shift+e exec $exit
 # Kill focused window
 bindsym $mod+Shift+q kill