Add Empty ConfigureRequest Method

Added empty `ConfigureRequest` method to address comment in PR review.

Source/Codecov/Upload/CodecovUploader.cs

@@ -42,7 +42,8 @@ protected virtual void ConfigureContent(HttpContent content)
             content.Headers.ContentType = new MediaTypeHeaderValue("application/x-gzip");
         }
 
-
+        protected virtual void ConfigureRequest(HttpRequestMessage request) { }
+
         protected virtual HttpResponseMessage CreateResponse(HttpRequestMessage request)
         {
             request.Content = new ByteArrayContent(GetReportBytes());