Add support for Times struct to verify the number of times a request is made.

[chullybun]

[chullybun]

Times now supported:

var mcf = MockHttpClientFactory.Create();
var mc = mcf.CreateClient("XXX", new Uri("https://d365test"));
mc.Request(HttpMethod.Post, "products/xyz").Times(Times.Exactly(2)).WithJsonBody(new Person { FirstName = "Bob", LastName = "Jane" })
    .Respond.WithJsonResource("MockHttpClientTest-UriAndBody_WithJsonResponse3.json", HttpStatusCode.Accepted);