BuildSystem: Rewrite whole build system structure

Now you have to use script/build.sh for building and running banan-os

script/check-fs.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+set -e
+
+if [[ -z $BANAN_DISK_IMAGE_PATH ]]; then
+	echo "You must set BANAN_DISK_IMAGE_PATH environment variable" >&2
+	exit 1
+fi
+
+LOOP_DEV=$(sudo losetup -f --show $BANAN_DISK_IMAGE_PATH)
+sudo partprobe $LOOP_DEV
+
+sudo fsck.ext2 -fn ${LOOP_DEV}p2 || true
+
+sudo losetup -d $LOOP_DEV