rpcserver: add channels to GetNodeInfo response

lnrpc/rpc.proto

@@ -1735,8 +1735,14 @@ message NodeInfo {
     */
     LightningNode node = 1 [json_name = "node"];
 
+    /// The total number of channels for the node.
     uint32 num_channels = 2 [json_name = "num_channels"];
+
+    /// The sum of all channels capacity for the node, denominated in satoshis.
     int64 total_capacity = 3 [json_name = "total_capacity"];
+
+    /// A list of all public channels for the node.
+    repeated ChannelEdge channels = 4 [json_name = "channels"];
 }
 
 /**

lnrpc/rpc.swagger.json

@@ -2617,11 +2617,20 @@
         },
         "num_channels": {
           "type": "integer",
-          "format": "int64"
+          "format": "int64",
+          "description": "/ The total number of channels for the node."
         },
         "total_capacity": {
           "type": "string",
-          "format": "int64"
+          "format": "int64",
+          "description": "/ The sum of all channels capacity for the node, denominated in satoshis."
+        },
+        "channels": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/lnrpcChannelEdge"
+          },
+          "description": "/ A list of all public channels for the node."
         }
       }
     },