Add install script

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

hosts/common/configs/user/gui/theme/theme.sh

@@ -1,9 +1,9 @@
-WALLPAPER=""
-MODE=""
+wallpaper=""
+mode=""
 
 set_wallpaper() {
   if [[ -f "$1" ]]; then
-    WALLPAPER="$1"
+    wallpaper="$1"
   else
     echo "Invalid wallpaper path: $1"
     exit 1
@@ -12,9 +12,9 @@ set_wallpaper() {
 
 toggle_mode() {
   if [[ "$(cat "${CONFIG}"/mode)" = "light" ]]; then
-    MODE="dark"
+    mode="dark"
   else
-    MODE="light"
+    mode="light"
   fi
 }
 
@@ -24,8 +24,8 @@ usage() {
 }
 
 finish() {
-  [[ -n "${WALLPAPER}" ]] && ln -sf "${WALLPAPER}" "${CONFIG}"/wallpaper
-  [[ -n "${MODE}" ]] && echo "${MODE}" > "${CONFIG}"/mode
+  [[ -n "${wallpaper}" ]] && ln -sf "${wallpaper}" "${CONFIG}"/wallpaper
+  [[ -n "${mode}" ]] && echo "${mode}" > "${CONFIG}"/mode
 
   "${INIT}" > /dev/null
   "${RELOAD}" > /dev/null
@@ -37,7 +37,7 @@ while getopts "m:w:" opt; do
     m)
       case "$OPTARG" in
         light|dark)
-          MODE="$OPTARG"
+          mode="$OPTARG"
           ;;
         toggle)
           toggle_mode