Add cmd wrapper script

cmd

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+# This file belongs to the framework.  You are not expected to modify it.
+
+# FIXME: Obviously this file isn't nearly robust enough.  Make it so.
+
+set -eu
+
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+subcmd="$1"
+
+# echo "$subcmd"
+
+#exit 3
+
+shift
+
+exec "$DIR"/cmd.d/"$subcmd" "$@"