Feat wsl1 support (#12)

* fix: support WSL1 in PowerShell

* fix: support WSL1 in Batch

* feat:  WSL1 support for bash script

Author: pxlrbt

move-wsl

@@ -69,8 +69,8 @@ if [ -z $(wsl --list | iconv -f UTF-16LE -t UTF-8 | grep -E "(^|\s)$WSL_NAME($|\
     exit 3
 fi
 
-if [ ! -f "$WSL_TARGET/ext4.vhdx" ]; then
-    echo "ERROR: Import failed. Target file not found. Export file at $TEMP_FILE"
+if [ ! -f "$WSL_TARGET/ext4.vhdx" ] && [ ! -d "$WSL_TARGET/rootfs" ]; then
+    echo "ERROR: Import failed. Target file/folder not found. Export file at $TEMP_FILE"
     exit 4
 fi