feat(deploy): add declarative installation workflow

tools/deployment/govoplan-deploy.py

@@ -0,0 +1,18 @@
+#!/usr/bin/env python3
+"""GovOPlaN deployment entry point."""
+
+from __future__ import annotations
+
+from pathlib import Path
+import sys
+
+
+TOOLS_ROOT = Path(__file__).resolve().parent
+if str(TOOLS_ROOT) not in sys.path:
+    sys.path.insert(0, str(TOOLS_ROOT))
+
+from govoplan_deploy.cli import main  # noqa: E402
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())