move scheduler type to scheduler options

Author: James Tayler

OnnxStack.IntegrationTests/StableDiffusionTests.cs

@@ -64,14 +64,14 @@ public async Task GivenTextToImage_WhenInference_ThenImageGenerated()
             Prompt = "an astronaut riding a horse in space",
             NegativePrompt = "blurry,ugly,cartoon",
             BatchCount = 1,
-            SchedulerType = SchedulerType.EulerAncestral,
             DiffuserType = DiffuserType.TextToImage
         };
 
         var scheduler = new SchedulerOptions
         {
             Width = 512,
             Height = 512,
+            SchedulerType = SchedulerType.EulerAncestral,
             InferenceSteps = 10,
             GuidanceScale = 7.0f,
             Seed = 1