big feat & update commit, read description...

feat: regenerate packages & release (update option), letter based folder structure support, choose gpg key, config file, multiple architecture done
update: docs, comments in code, add, del, list, sign
i dont know honestly... docs will be updated later

scripts/repoinit.sh

@@ -1,6 +1,11 @@
 #!/bin/sh
 
-# make folders
-mkdir -p ./apt-repo/dists/stable/main/binary-amd64/
-mkdir -p ./apt-repo/pool/main/
+if [ -z $1 ]; then
+	echo "error: --repodir is not set"
+	exit 1
+fi
+
+# make folders
+mkdir -p $1/apt-repo/dists/stable/main/binary-amd64/
+mkdir -p $1/apt-repo/pool/main/