Re-add stub entry point script

Author: rfinnie

2ping

@@ -0,0 +1,13 @@
+#!/usr/bin/env python3
+
+# SPDX-PackageSummary: 2ping - A bi-directional ping utility
+# SPDX-FileCopyrightText: Copyright (C) 2010-2025 Ryan Finnie
+# SPDX-License-Identifier: MPL-2.0
+
+from pathlib import Path
+from runpy import run_module
+import sys
+
+
+sys.path.insert(0, str(Path(__file__).resolve().parent))
+run_module("twoping.cli", run_name="__main__")