Improve ISO partition auto mount for different Linux distros.

IMG/cpio/ventoy/hook/default/ventoy-uauto-hook.sh

@@ -0,0 +1,16 @@
+#!/ventoy/busybox/sh
+
+. /ventoy/hook/ventoy-hook-lib.sh
+
+PATH=$BUSYBOX_PATH:$VTOY_PATH/tool:$PATH
+
+vtlog "####### $0 $* ########"
+
+vtoy_udev_auto_hook() {
+    if [ -d $VT_DRACUT_HOOKS/pre-pivot ]; then
+        vtlog "dracut distro"
+        ventoy_dracut_pivot_udev_rule
+    fi
+}
+
+vtoy_udev_auto_hook