lnrpc: add max_htlc to RoutingPolicy

lnrpc/rpc.proto

@@ -1597,6 +1597,7 @@ message RoutingPolicy {
     int64 fee_base_msat = 3 [json_name = "fee_base_msat"];
     int64 fee_rate_milli_msat = 4 [json_name = "fee_rate_milli_msat"];
     bool disabled = 5 [json_name = "disabled"];
+    uint64 max_htlc = 6 [json_name = "max_htlc"];
 }
 
 /**

lnrpc/rpc.swagger.json

@@ -2815,6 +2815,10 @@
         "disabled": {
           "type": "boolean",
           "format": "boolean"
+        },
+        "max_htlc": {
+          "type": "string",
+          "format": "uint64"
         }
       }
     },