Added example inventory

hpk-inv.py

@@ -0,0 +1,20 @@
+import subprocess
+
+
+def get_pass(filename: str) -> str:
+    """Get the data from the password manager."""
+    r = subprocess.run(["pass", "show", filename], capture_output=True, check=True)
+    return r.stdout.decode("utf-8")
+
+chatmail = [
+    (
+        "c1.testrun.org",
+        {
+            "ssh_user": "root",
+            "domain": "c1.testrun.org",
+            "dkim_selector": "2023",
+            "dkim_key": get_pass("delta/c1.testrun.org/dkim_key"),
+            "dkim_txt": get_pass("delta/c1.testrun.org/dkim_txt"),
+        },
+    ),
+]