feat(templates): standalone NTLMSSP Type 3 parser + decnet-init wrapper

* decnet/templates/{rdp,smb}/ntlmssp.py — minimal Type 3 (Authenticate)
  parser shared between the SMB and RDP-NLA templates.  Lands NTLM
  creds in the universal Credential table with secret_kind=ntlmssp_v1
  / ntlmssp_v2 and secret_b64 = base64 of the NtChallengeResponse so
  the bounty pipeline can feed the right hashcat mode.
* scripts/decnet-init.sh — convenience wrapper around `sudo decnet init
  --force` that targets the current working directory; saves operators
  retyping the install paths during dev iterations.

scripts/decnet-init.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+sudo .311/bin/decnet init --force --install-dir "$PWD" --user anti --group anti