Add Grpc ProtoBuf support (request-response) (#1047)

* ProtoBuf

* .

* x

* ---

* x

* fx

* ...

* sc

* ...

* .

* groen

* x

* fix tests

* ok!?

* fix tests

* fix tests

* !

* x

* 6

* .

* x

* ivaluematcher

* transformer

* .

* sc

* .

* mapping

* x

* tra

* com

* ...

* .

* .

* .

* AddProtoDefinition

* .

* set

* grpahj

* .

* .

* IdOrText

* ...

* async

* async2

* .

* t

* nuget

* <PackageReference Include="ProtoBufJsonConverter" Version="0.2.0-preview-04" />

* http version

* tests

* .WithHttpVersion("2")

* <PackageReference Include="ProtoBufJsonConverter" Version="0.2.0" />

* HttpVersionParser

src/WireMock.Net/Server/WireMockServer.ConvertMapping.cs

@@ -195,6 +195,11 @@ public partial class WireMockServer
             requestBuilder = requestBuilder.UsingMethod(matchBehaviour, matchOperator, requestModel.Methods);
         }
 
+        if (requestModel.HttpVersion != null)
+        {
+            requestBuilder = requestBuilder.WithHttpVersion(requestModel.HttpVersion);
+        }
+
         if (requestModel.Headers != null)
         {
             foreach (var headerModel in requestModel.Headers.Where(h => h.Matchers != null))