Move logging to Ryujinx.Common and make it a static class (#413)

Ryujinx.Common/Logging/LogEventArgs.cs

@@ -0,0 +1,19 @@
+using System;
+
+namespace Ryujinx.Common.Logging
+{
+    public class LogEventArgs : EventArgs
+    {
+        public LogLevel Level { get; private set; }
+        public TimeSpan Time  { get; private set; }
+
+        public string Message { get; private set; }
+
+        public LogEventArgs(LogLevel Level, TimeSpan Time, string Message)
+        {
+            this.Level   = Level;
+            this.Time    = Time;
+            this.Message = Message;
+        }
+    }
+}