Add project files.

AssetStudio/Logger.cs

@@ -0,0 +1,26 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace AssetStudio
+{
+    public static class Logger
+    {
+        public static ILogger Default = new DummyLogger();
+
+        public static void Verbose(string message) => Default.Log(LoggerEvent.Verbose, message);
+        public static void Debug(string message) => Default.Log(LoggerEvent.Debug, message);
+        public static void Info(string message) => Default.Log(LoggerEvent.Info, message);
+        public static void Warning(string message) => Default.Log(LoggerEvent.Warning, message);
+        public static void Error(string message) => Default.Log(LoggerEvent.Error, message);
+
+        public static void Error(string message, Exception e)
+        {
+            var sb = new StringBuilder();
+            sb.AppendLine(message);
+            sb.AppendLine(e.ToString());
+            Default.Log(LoggerEvent.Error, sb.ToString());
+        }
+    }
+}