Add Zigbee coordinator backup

backups/zigbee/coordinator_backup.json

@@ -0,0 +1,31 @@
+{
+  "metadata": {
+    "format": "zigpy/open-coordinator-backup",
+    "version": 1,
+    "source": "zigbee-herdsman@10.0.7",
+    "internal": {
+      "date": "2026-05-14T14:48:35.098Z",
+      "znpVersion": 1
+    }
+  },
+  "stack_specific": {
+    "zstack": {
+      "tclk_seed": "32d69cbe3f0e15471e5d43f9401e485a"
+    }
+  },
+  "coordinator_ieee": "00124b00257bf416",
+  "pan_id": "46bc",
+  "extended_pan_id": "087730b5f614ea4a",
+  "nwk_update_id": 0,
+  "security_level": 5,
+  "channel": 11,
+  "channel_mask": [
+    11
+  ],
+  "network_key": {
+    "key": "049909949a950d91522cf10cc369a724",
+    "sequence_number": 0,
+    "frame_counter": 0
+  },
+  "devices": []
+}