Add logging

src/freedombone-utils-android

     echo '{' > "$plinth_api"
     echo '  "shortcuts": [' >> "$plinth_api"
 
+    echo 'android app' > /var/log/androidapp.log
+
     android_ctr=0
     app_index=0
     # shellcheck disable=SC2068
     for a in ${APPS_INSTALLED[@]}
     do
+        echo "Starting app ${APPS_INSTALLED_NAMES[$app_index]}" >> /var/log/androidapp.log
         if [[ "$a" == "1" ]]; then
             app_name=${APPS_INSTALLED_NAMES[$app_index]}
+            echo "App installed $app_name" >> /var/log/androidapp.log
             app_filename="/usr/share/${PROJECT_NAME}/apps/${PROJECT_NAME}-app-${app_name}"
             if [ -f "$app_filename" ]; then
+                echo "File exists $app_filename" >> /var/log/androidapp.log
                 # get the icon for the app
                 icon_filename="/usr/share/${PROJECT_NAME}/android-app/${app_name}.png"
                 if [ -f "$icon_filename" ]; then
                     cp "$icon_filename" "/var/www/${local_hostname}/htdocs/icons/${app_name}.png"
+                    echo "icon copied" >> /var/log/androidapp.log
                 else
                     icon_filename=
+                    echo "icon not copied" >> /var/log/androidapp.log
                 fi
 
                 app_name_upper=$(echo "$app_name" | awk '{print toupper($0)}')