BuildSystem: Rewrite whole build system structure

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

script/config.sh

@@ -0,0 +1,27 @@
+if [[ -z $BANAN_ROOT_DIR ]]; then
+	if [[ -z $BANAN_SCRIPT_DIR ]]; then
+		export BANAN_ROOT_DIR=$BANAN_SCRIPT_DIR/..
+	else
+		echo  "You must set the BANAN_ROOT_DIR environment variable" >&2
+		exit 1
+	fi
+fi
+
+if [[ -z $BANAN_ARCH ]]; then
+	echo  "You must set the BANAN_ARCH environment variable" >&2
+	exit 1
+fi
+
+export BANAN_TOOLCHAIN_DIR=$BANAN_ROOT_DIR/toolchain
+export BANAN_TOOLCHAIN_PREFIX=$BANAN_TOOLCHAIN_DIR/local
+export BANAN_TOOLCHAIN_TRIPLE_PREFIX=$BANAN_ARCH-banan_os
+
+export BANAN_BUILD_DIR=$BANAN_ROOT_DIR/build
+
+export BANAN_SYSROOT=$BANAN_BUILD_DIR/sysroot
+
+export BANAN_DISK_IMAGE_PATH=$BANAN_BUILD_DIR/banan-os.img
+
+if [[ -z $BANAN_UEFI_BOOT ]]; then
+	export BANAN_UEFI_BOOT=0
+fi