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.Abstractions/Models/IBodyData.cs

@@ -1,7 +1,10 @@
+using System;
 using System.Collections.Generic;
 using System.Text;
+using WireMock.Models;
 using WireMock.Types;
 
+// ReSharper disable once CheckNamespace
 namespace WireMock.Util;
 
 /// <summary>
@@ -10,7 +13,7 @@ namespace WireMock.Util;
 public interface IBodyData
 {
     /// <summary>
-    /// The body (as bytearray).
+    /// The body (as byte array).
     /// </summary>
     byte[]? BodyAsBytes { get; set; }
 
@@ -26,6 +29,7 @@ public interface IBodyData
 
     /// <summary>
     /// The body (as JSON object).
+    /// Also used for ProtoBuf.
     /// </summary>
     object? BodyAsJson { get; set; }
 
@@ -68,4 +72,16 @@ public interface IBodyData
     /// Defines if this BodyData is the result of a dynamically created response-string. (
     /// </summary>
     public string? IsFuncUsed { get; set; }
+
+    #region ProtoBuf
+    /// <summary>
+    /// Gets or sets the proto definition.
+    /// </summary>
+    public Func<IdOrText>? 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
 }

src/WireMock.Net.Abstractions/Models/IdOrText.cs

@@ -0,0 +1,33 @@
+namespace WireMock.Models;
+
+/// <summary>
+/// A structure defining an (optional) Id and a Text.
+/// </summary>
+public readonly struct IdOrText
+{
+    /// <summary>
+    /// The Id [optional].
+    /// </summary>
+    public string? Id { get; }
+
+    /// <summary>
+    /// The Text.
+    /// </summary>
+    public string Text { get; }
+
+    /// <summary>
+    /// When Id is defined, return the Id, else the Text.
+    /// </summary>
+    public string Value => Id ?? Text;
+
+    /// <summary>
+    /// Create a IdOrText
+    /// </summary>
+    /// <param name="id">The Id [optional]</param>
+    /// <param name="text">The Text.</param>
+    public IdOrText(string? id, string text)
+    {
+        Id = id;
+        Text = text;
+    }
+}