An OpenApi (swagger) parser to generate MappingModel or mapping.json file (#479)

* wip

* .

* .

* nuget

* .

* .

* WithMappingModel

* tests

* json

* codefactor

* sign

* .

* interface

* sln

* comments

examples/WireMock.Net.Console.NETCoreApp2/Program.cs

@@ -0,0 +1,28 @@
+using System.IO;
+using System.Linq;
+using System.Reflection;
+using log4net;
+using log4net.Config;
+using log4net.Repository;
+using WireMock.Net.ConsoleApplication;
+
+namespace WireMock.Net.Console.NETCoreApp2
+{
+    static class Program
+    {
+        private static readonly ILoggerRepository LogRepository = LogManager.GetRepository(Assembly.GetEntryAssembly());
+        private static readonly ILog Log = LogManager.GetLogger(typeof(Program));
+
+        static void Main(params string[] args)
+        {
+            XmlConfigurator.Configure(LogRepository, new FileInfo("log4net.config"));
+
+            foreach (var file in Directory.GetFiles("__admin").Where(f => !f.StartsWith("wiremock")))
+            {
+                File.Delete(file);
+            }
+
+            MainApp.Run();
+        }
+    }
+}