Back up every store: the restic module holds node-backup, the stores contribute their dumps

ADR 0214 / to-be 43. restic keeps one repository per machine and takes a nightly snapshot per
module — 14 daily, 8 weekly, 6 monthly — and restores beside the live data, never over it. postgres,
mssql and mongodb contribute a consistent dump; minio, influxdb, the vault, mailu, gitea and
nextcloud the directories that hold their data.

modules/mesh-vault/module.json

@@ -79,5 +79,12 @@
       "name": "mesh-vault",
       "scope": "mesh"
     }
+  ],
+  "contributions": [
+    {
+      "seat": "node-backup",
+      "kind": "backup",
+      "content": "path ${dir:state}\npath ${dir:ledger}\npath ${dir:root}\n"
+    }
   ]
 }