Include Handlebars.Net.Helpers project (#456)

* wip

* h 100

* rename

* csproj

test/WireMock.Net.Tests/ResponseBuilders/ResponseWithHandlebarsHelpersTests.cs

@@ -0,0 +1,36 @@
+using System.Threading.Tasks;
+using NFluent;
+using WireMock.Models;
+using WireMock.ResponseBuilders;
+using WireMock.Settings;
+using WireMock.Types;
+using WireMock.Util;
+using Xunit;
+
+namespace WireMock.Net.Tests.ResponseBuilders
+{
+    public class ResponseWithHandlebarsHelpersTests
+    {
+        private readonly WireMockServerSettings _settings = new WireMockServerSettings();
+        private const string ClientIp = "::1";
+
+        [Fact]
+        public async Task Response_ProvideResponseAsync_HandlebarsHelpers_String_Uppercase()
+        {
+            // Assign
+            var body = new BodyData { BodyAsString = "abc", DetectedBodyType = BodyType.String };
+
+            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", ClientIp, body);
+
+            var response = Response.Create()
+                .WithBody("{{String.Uppercase request.body}}")
+                .WithTransformer();
+
+            // Act
+            var responseMessage = await response.ProvideResponseAsync(request, _settings);
+
+            // assert
+            Check.That(responseMessage.BodyData.BodyAsString).Equals("ABC");
+        }
+    }
+}