sway: Simplify session lock and exit keybinds

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

sway/config

@@ -6,9 +6,8 @@ set $right n
 
 set $term alacritty
 set $menu wofi --show drun --insensitive | xargs swaymsg exec --
-set $swayexit swaynag -t warning \
-    -m 'You pressed the exit shortcut. Do you really want to exit sway? This will end your Wayland session.' \
-    -B 'Yes, exit sway' 'swaymsg exit'
+set $lock swaylock
+set $exit swaynag -t warning -m 'Exit sway?' -B 'Yes, exit' 'swaymsg exit'
 
 set $vienna_lat 48.2
 set $vienna_long 16.4
@@ -18,9 +17,9 @@ output * background ~/.config/sway/background.png fill #5fb2d0
 
 # Idle/screenlock
 exec swayidle -w \
-     timeout 300 swaylock \
+     timeout 300 $lock \
      timeout 600 'swaymsg "output * dpms off"' resume 'swaymsg "output * dpms on"' \
-     before-sleep swaylock
+     before-sleep $lock
 
 # Display temperature
 exec $wlsunset
@@ -47,8 +46,8 @@ default_border none
 # Key bindings
 bindsym $mod+Return exec $term
 bindsym $mod+u exec $menu
-bindsym $mod+l exec swaylock
-bindsym $mod+Shift+e exec $swayexit
+bindsym $mod+l exec $lock
+bindsym $mod+Shift+e exec $exit
 # Kill focused window
 bindsym $mod+Shift+q kill
 # Reload the configuration file