Return RawBody from Create/GetOrder methods

src/Spoleto.RestClient/Extensions/RestClientExtensions.cs

@@ -0,0 +1,26 @@
+using Spoleto.RestClient.Serializers;
+
+namespace Spoleto.RestClient
+{
+    public static class RestClientExtensions
+    {
+        public static async Task<(T Object, string RawBody)> ExecuteWithRawBodyAsync<T>(this IRestClient client, RestRequest request, CancellationToken cancellationToken = default) where T : class
+        {
+            var restResponse = await client.ExecuteAsStringAsync(request, cancellationToken).ConfigureAwait(false);
+
+            if (restResponse == null)
+            {
+                throw new ArgumentNullException(nameof(restResponse));
+            }
+
+            if (!restResponse.IsSuccessStatusCode)
+            {
+                throw new Exception($"Unsuccesful response with {nameof(restResponse.StatusCode)} = {restResponse.StatusCode}");
+            }
+
+            var objectResult = SerializationManager.Deserialize<T>(restResponse);
+
+            return (objectResult, restResponse.Content);
+        }
+    }
+}