Add aliases for cow-builder instances (stable/unstable and 32/64 bits)

.zsh.d/os.d/Debian.zsh

@@ -29,9 +29,11 @@ cow-dist () {
     return $?
 }
 
-alias cow-stable="cow-dist stable"
+alias cow-sid32="cow-dist sid32"
+alias cow-stable32="cow-dist stable32"
+alias cow-sid64="cow-dist sid64"
+alias cow-stable64="cow-dist stable64"
 alias cow-stable-bpo="cow-dist stable-bpo"
-alias cow-sid="cow-dist sid"
 
 # tools
 apt-rbdepends () {