1. change some directory structure for the build script

2. add build script and document
   see DOC/BuildVentoyFromSource.txt for detail

INSTALL/ventoy_pack.sh

@@ -0,0 +1,119 @@
+#!/bin/sh
+
+. ./tool/ventoy_lib.sh
+
+GRUB_DIR=../GRUB2/INSTALL
+LANG_DIR=../LANGUAGES
+
+if ! [ -d $GRUB_DIR ]; then
+    echo "$GRUB_DIR not exist"
+    exit 1
+fi
+
+
+cd ../IMG
+sh mkcpio.sh
+cd -
+
+
+LOOP=$(losetup -f)
+
+rm -f img.bin
+dd if=/dev/zero of=img.bin bs=1M count=256 status=none
+
+losetup -P $LOOP img.bin 
+
+while ! grep -q 524288 /sys/block/${LOOP#/dev/}/size 2>/dev/null; do
+    echo "wait $LOOP ..."
+    sleep 1
+done
+
+format_ventoy_disk $LOOP 
+
+$GRUB_DIR/sbin/grub-bios-setup  --skip-fs-probe  --directory="./grub/i386-pc"  $LOOP
+
+curver=$(get_ventoy_version_from_cfg ./grub/grub.cfg)
+
+tmpmnt=./ventoy-${curver}-mnt
+tmpdir=./ventoy-${curver}
+
+rm -rf $tmpmnt
+mkdir -p $tmpmnt
+
+mount ${LOOP}p2  $tmpmnt 
+
+mkdir -p $tmpmnt/grub
+
+# First copy grub.cfg file, to make it locate at front of the part2
+cp -a ./grub/grub.cfg     $tmpmnt/grub/
+
+ls -1 ./grub/ | grep -v 'grub\.cfg' | while read line; do
+    cp -a ./grub/$line $tmpmnt/grub/
+done
+
+cp -a ./ventoy   $tmpmnt/
+cp -a ./EFI   $tmpmnt/
+cp -a ./tool/ENROLL_THIS_KEY_IN_MOKMANAGER.cer $tmpmnt/
+
+
+mkdir -p $tmpmnt/tool
+cp -a ./tool/mount*     $tmpmnt/tool/
+
+rm -f $tmpmnt/grub/i386-pc/*
+
+
+umount $tmpmnt && rm -rf $tmpmnt
+
+
+rm -rf $tmpdir
+mkdir -p $tmpdir/boot
+mkdir -p $tmpdir/ventoy
+echo $curver > $tmpdir/ventoy/version
+dd if=$LOOP of=$tmpdir/boot/boot.img bs=1 count=512  status=none
+dd if=$LOOP of=$tmpdir/boot/core.img bs=512 count=2047 skip=1 status=none
+xz --check=crc32 $tmpdir/boot/core.img
+
+cp -a ./tool $tmpdir/
+cp -a Ventoy2Disk.sh $tmpdir/
+
+
+#32MB disk img
+dd status=none if=$LOOP of=$tmpdir/ventoy/ventoy.disk.img bs=512 count=$VENTOY_SECTOR_NUM skip=$part2_start_sector
+xz --check=crc32 $tmpdir/ventoy/ventoy.disk.img
+
+losetup -d $LOOP && rm -f img.bin
+
+rm -f ventoy-${curver}-linux.tar.gz
+
+
+CurDir=$PWD
+cd $tmpdir/tool
+
+for file in $(ls); do
+    if [ "$file" != "xzcat" ] && [ "$file" != "ventoy_lib.sh" ]; then
+        xz --check=crc32 $file
+    fi
+done
+
+cd $CurDir
+tar -czvf ventoy-${curver}-linux.tar.gz $tmpdir
+
+rm -f ventoy-${curver}-windows.zip
+cp -a Ventoy2Disk.exe $tmpdir/
+cp -a $LANG_DIR/languages.ini $tmpdir/ventoy/
+rm -rf $tmpdir/tool
+rm -f $tmpdir/*.sh
+
+
+zip -r ventoy-${curver}-windows.zip $tmpdir/
+
+rm -rf $tmpdir
+
+if [ -e ventoy-${curver}-windows.zip ] && [ -e ventoy-${curver}-linux.tar.gz ]; then
+    echo -e "\n ============= SUCCESS =================\n"
+else
+    echo -e "\n ============= FAILED =================\n"
+    exit 1
+fi
+
+