support for tails.img

INSTALL/grub/grub.cfg

@@ -1480,6 +1480,23 @@ function ventoy_img_batocera {
     vt_unset_boot_opt
 }
 
+function ventoy_img_tails {
+    vt_load_cpio  $vtoy_path  "${vt_chosen_path}" ${vtoy_iso_part} "busybox=$ventoy_busybox_ver"
+    vt_trailer_cpio ${vtoy_iso_part} "${vt_chosen_path}" noinit
+
+    ventoy_debug_pause
+
+    #boot image file
+    vt_set_boot_opt rdinit=/vtoy/vtoy live-media=/dev/dm-1 ventoyos=tails
+    vt_img_hook_root
+    
+    set root=(vtimghd,1)
+    configfile (vtimghd,1)/efi/debian/grub.cfg
+
+    vt_img_unhook_root
+    vt_unset_boot_opt
+}
+
 function ventoy_img_memtest86 {      
     chainloader (vtimghd,1)/efi/boot/BOOTX64.efi
     boot
@@ -1518,6 +1535,8 @@ function img_common_menuentry {
     set vtback_root=$root
     ventoy_cli_console
     vt_push_last_entry
+    set vtback_theme=$theme
+    unset theme
 
     vt_img_extra_initrd_reset
 
@@ -1544,6 +1563,8 @@ function img_common_menuentry {
         ventoy_img_freedombox
     elif vt_str_begin "$vtImgHd1Label" "BATOCERA"; then
         ventoy_img_batocera
+    elif vt_str_begin "$vtImgHd1Label" "Tails"; then
+        ventoy_img_tails
     elif [ "$vtImgHd2Label" = "RECALBOX" ]; then
         ventoy_img_recalbox
     elif [ -f (vtimghd,2)/loader/entries/ubos.conf ]; then
@@ -1568,6 +1589,7 @@ function img_common_menuentry {
 
     set root=$vtback_root
     vt_pop_last_entry
+    set theme=$vtback_theme
     ventoy_gui_console
     set ventoy_compatible=NO
 }