add pre-emptive detection for SD3-Medium arch

Author: mcmonkey4eva

src/Text2Image/T2IModelClassSorter.cs

@@ -152,6 +152,8 @@ JToken GetEmbeddingKey(JObject h)
         Register(new() { ID = "stable-cascade-v1-stage-a", CompatClass = "stable-cascade-v1", Name = "Stable Cascade v1 (Stage A)", StandardWidth = 1024, StandardHeight = 1024, IsThisModelOfClass = (m, h) => { return false; } });
         Register(new() { ID = "stable-cascade-v1-stage-b", CompatClass = "stable-cascade-v1", Name = "Stable Cascade v1 (Stage B)", StandardWidth = 1024, StandardHeight = 1024, IsThisModelOfClass = (m, h) => { return false; } });
         Register(new() { ID = "stable-cascade-v1-stage-c", CompatClass = "stable-cascade-v1", Name = "Stable Cascade v1 (Stage C)", StandardWidth = 1024, StandardHeight = 1024, IsThisModelOfClass = (m, h) => { return false; } });
+        Register(new() { ID = "stable-diffusion-v3-medium", CompatClass = "stable-diffusion-v3-medium", Name = "Stable Diffusion 3 Medium", StandardWidth = 1024, StandardHeight = 1024, IsThisModelOfClass = (m, h) => { return false; } });
+        // TensorRT variants
         Register(new() { ID = "stable-diffusion-v1/tensorrt", CompatClass = "stable-diffusion-v1", Name = "Stable Diffusion v1 (TensorRT Engine)", StandardWidth = 512, StandardHeight = 512, IsThisModelOfClass = (m, h) => { return false; } });
         Register(new() { ID = "stable-diffusion-v2-768-v/tensorrt", CompatClass = "stable-diffusion-v2", Name = "Stable Diffusion v2 (TensorRT Engine)", StandardWidth = 768, StandardHeight = 768, IsThisModelOfClass = (m, h) => { return false; } });
         Register(new() { ID = "stable-diffusion-xl-v0_9-base/tensorrt", CompatClass = "stable-diffusion-xl-v1", Name = "Stable Diffusion XL 0.9-Base (TensorRT Engine)", StandardWidth = 1024, StandardHeight = 1024, IsThisModelOfClass = (m, h) => { return false; } });