Better logger

1. Throw exception for fatal/error log when debugging
2. Write to debug output for warn/debug/info log when debugging
3. part of #355

Wox.Infrastructure/Exception/WoxException.cs

@@ -0,0 +1,19 @@
+namespace Wox.Core.Exception
+{
+    /// <summary>
+    /// Base Wox Exceptions
+    /// </summary>
+    public class WoxException : System.Exception
+    {
+        public WoxException(string msg)
+            : base(msg)
+        {
+
+        }
+
+        public WoxException(string msg, System.Exception innerException)
+            : base(msg, innerException)
+        {
+        }
+    }
+}