Add support for CoreML

Author: saddam213

OnnxStack.Core/Config/ExecutionProvider.cs

@@ -4,6 +4,7 @@ public enum ExecutionProvider
     {
         DirectML = 0,
         Cuda = 1,
-        Cpu = 2
+        Cpu = 2,
+        CoreML = 3
     }
 }

OnnxStack.Core/Extensions.cs

@@ -38,6 +38,11 @@ public static SessionOptions GetSessionOptions(this OnnxStackConfig configuratio
                     sessionOptions.AppendExecutionProvider_CUDA(configuration.DeviceId);
                     sessionOptions.AppendExecutionProvider_CPU();
                     return sessionOptions;
+                case ExecutionProvider.CoreML:
+                    sessionOptions.AppendExecutionProvider_CoreML(
+                        CoreMLFlags.COREML_FLAG_ONLY_ENABLE_DEVICE_WITH_ANE
+                    );
+                    return sessionOptions;
             }
         }