Add project files.

AssetStudio/ILogger.cs

@@ -0,0 +1,34 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace AssetStudio
+{
+    public enum LoggerEvent
+    {
+        Verbose,
+        Debug,
+        Info,
+        Warning,
+        Error,
+    }
+
+    public interface ILogger
+    {
+        void Log(LoggerEvent loggerEvent, string message);
+    }
+
+    public sealed class DummyLogger : ILogger
+    {
+        public void Log(LoggerEvent loggerEvent, string message) { }
+    }
+
+    public sealed class ConsoleLogger : ILogger
+    {
+        public void Log(LoggerEvent loggerEvent, string message)
+        {
+            Console.WriteLine("[{0}] {1}", loggerEvent, message);
+        }
+    }
+}