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

* ProtoBuf

* .

* x

* ---

* x

* fx

* ...

* sc

* ...

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* groen

* x

* fix tests

* ok!?

* fix tests

* fix tests

* !

* x

* 6

* .

* x

* ivaluematcher

* transformer

* .

* sc

* .

* mapping

* x

* tra

* com

* ...

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* .

* .

* AddProtoDefinition

* .

* set

* grpahj

* .

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* 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.Abstractions/Admin/Mappings/ResponseModel.cs

@@ -35,7 +35,7 @@ public class ResponseModel
     public bool? BodyAsJsonIndented { get; set; }
 
     /// <summary>
-    /// Gets or sets the body (as bytearray).
+    /// Gets or sets the body (as byte array).
     /// </summary>
     public byte[]? BodyAsBytes { get; set; }
 
@@ -84,6 +84,11 @@ public class ResponseModel
     /// </summary>
     public string? HeadersRaw { get; set; }
 
+    /// <summary>
+    /// Gets or sets the Trailing Headers.
+    /// </summary>
+    public IDictionary<string, object>? TrailingHeaders { get; set; }
+
     /// <summary>
     /// Gets or sets the delay in milliseconds.
     /// </summary>
@@ -123,4 +128,16 @@ public class ResponseModel
     /// Gets or sets the WebProxy settings.
     /// </summary>
     public WebProxyModel? WebProxy { get; set; }
+
+    #region ProtoBuf
+    /// <summary>
+    /// Gets or sets the proto definition.
+    /// </summary>
+    public string? ProtoDefinition { get; set; }
+
+    /// <summary>
+    /// Gets or sets the full type of the protobuf (request/response) message object. Format is "{package-name}.{type-name}".
+    /// </summary>
+    public string? ProtoBufMessageType { get; set; }
+    #endregion
 }