add kitty as possible terminal

also make terminal configurable in sway config

.config/sway/config

@@ -1,3 +1,6 @@
+# override in config.local
+set $terminal 'urxvt'
+
 include config.keybinds
 include config.theme
 include config.common

.config/sway/config.keybinds

@@ -4,7 +4,7 @@ set $mod Mod4
 floating_modifier $mod
 
 # start a terminal
-bindsym $mod+Return exec alacritty
+bindsym $mod+Return exec $$terminal
 
 # close focused window (doesn't work, where did i get this?)
 bindsym $mod+q close

.config/zsh/.zprofile

@@ -93,7 +93,9 @@ fi
 export CCACHE_DIR="/var/cache/ccache"
 
 # Set terminal
-if command -v alacritty > /dev/null; then
+if command -v kitty > /dev/null; then
+    export TERMINAL="kitty"
+elif command -v alacritty > /dev/null; then
     export TERMINAL="alacritty"
 elif command -v xfce4-terminal > /dev/null; then
     export TERMINAL="xfce4-terminal"