Add missing $LAYOUT_DIR variable

install.sh

@@ -8,6 +8,7 @@ if [ "$UID" -eq "$ROOT_UID" ]; then
   AURORAE_DIR="/usr/share/aurorae/themes"
   SCHEMES_DIR="/usr/share/color-schemes"
   PLASMA_DIR="/usr/share/plasma/desktoptheme"
+  LAYOUT_DIR="/usr/share/plasma/layout-templates"
   LOOKFEEL_DIR="/usr/share/plasma/look-and-feel"
   KVANTUM_DIR="/usr/share/Kvantum"
   WALLPAPER_DIR="/usr/share/wallpapers"
@@ -15,6 +16,7 @@ else
   AURORAE_DIR="$HOME/.local/share/aurorae/themes"
   SCHEMES_DIR="$HOME/.local/share/color-schemes"
   PLASMA_DIR="$HOME/.local/share/plasma/desktoptheme"
+  LAYOUT_DIR="$HOME/.local/share/plasma/layout-templates"
   LOOKFEEL_DIR="$HOME/.local/share/plasma/look-and-feel"
   KVANTUM_DIR="$HOME/.config/Kvantum"
   WALLPAPER_DIR="$HOME/.local/share/wallpapers"