Refactored MtApi4 (MT4) for working with new architecture

MtApi/IMtLogger.cs

@@ -0,0 +1,11 @@
+namespace MtApi
+{
+    public interface IMtLogger
+    {
+        void Debug(object message);
+        void Error(object message);
+        void Fatal(object message);
+        void Info(object message);
+        void Warn(object message);
+    }
+}