Add log4net logging (#89)

* logging + fixed proxy isses

* Add more logging

* comments

* 1.0.3.1

examples/WireMock.Net.Console.NETCoreApp/log4net.config

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+  <configSections>
+    <section name="log4net" type="System.Configuration.IgnoreSectionHandler" />
+  </configSections>
+  <appSettings>
+    <add key="log4net.Internal.Debug" value="true"/>
+  </appSettings>
+  <log4net>
+    <appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
+      <layout type="log4net.Layout.PatternLayout">
+        <conversionPattern value="%date [%thread] %-5level %logger{1} - %message%newline" />
+      </layout>
+    </appender>
+    <root>
+      <level value="DEBUG" />
+      <appender-ref ref="ConsoleAppender" />
+    </root>
+  </log4net>
+</configuration>