msggen: Add datastoreusage command

Signed-off-by: Peter Neuroth <pet.v.ne@gmail.com>

.msggen.json

@@ -439,6 +439,13 @@
             "Datastore.key[]": 1,
             "Datastore.string": 4
         },
+        "DatastoreusageDatastoreusage": {
+            "DatastoreUsage.datastoreusage.key": 1,
+            "DatastoreUsage.datastoreusage.total_bytes": 2
+        },
+        "DatastoreusageResponse": {
+            "DatastoreUsage.datastoreusage": 1
+        },
         "DecodeExtra": {
             "Decode.extra[].data": 2,
             "Decode.extra[].tag": 1
@@ -1905,6 +1912,22 @@
             "added": "pre-v0.10.1",
             "deprecated": false
         },
+        "DatastoreUsage": {
+            "added": "v23.11",
+            "deprecated": false
+        },
+        "DatastoreUsage.datastoreusage": {
+            "added": "v23.11",
+            "deprecated": false
+        },
+        "DatastoreUsage.datastoreusage.key": {
+            "added": "v23.11",
+            "deprecated": false
+        },
+        "DatastoreUsage.datastoreusage.total_bytes": {
+            "added": "v23.11",
+            "deprecated": false
+        },
         "Decode": {
             "added": "v23.05",
             "deprecated": null

contrib/msggen/msggen/patch.py

@@ -108,6 +108,7 @@ class OptionalPatch(Patch):
         'v23.02',
         'v23.05',
         'v23.08',
+        'v23.11',
     ]
     # Oldest supported versions. Bump this if you no longer want to
     # support older versions, and you want to make required fields

contrib/msggen/msggen/utils/utils.py

@@ -39,6 +39,7 @@ def load_jsonrpc_service(schema_dir: str):
         "Connect",
         "CreateInvoice",
         "Datastore",
+        "DatastoreUsage",
         "CreateOnion",
         "DelDatastore",
         "DelExpiredInvoice",