add ToMessage() to VmcExtRemote

VmcMessages/VmcExtRemote.cs

@@ -18,6 +18,7 @@
 
 using Godot;
 using godotOscSharp;
+using System.Collections.Generic;
 
 namespace godotVmcSharp
 {
@@ -52,5 +53,13 @@ namespace godotVmcSharp
             service = _service;
             json = _json;
         }
+
+        public godotOscSharp.OscMessage ToMessage()
+        {
+            return new godotOscSharp.OscMessage(addr, new List<godotOscSharp.OscArgument>{
+                new godotOscSharp.OscArgument(service, 's'),
+                new godotOscSharp.OscArgument(json, 's')
+            });
+        }
     }
 }