Refactor type search policies and providers structure

Moved type search-related interfaces and implementations into a new Editor/TypeSearch folder for better organization. Updated file paths and separated interface definitions from their default implementations.

Author: mackysoft

Assets/MackySoft/MackySoft.SerializeReferenceExtensions/Editor/TypeSearch.meta

@@ -0,0 +1,9 @@
+using System;
+
+namespace MackySoft.SerializeReferenceExtensions.Editor
+{
+    public interface IIntrinsicTypePolicy
+    {
+        bool IsAllowed (Type candiateType);
+    }
+}

Assets/MackySoft/MackySoft.SerializeReferenceExtensions/Editor/TypeSearch/IIntrinsicTypePolicy.cs

@@ -0,0 +1,10 @@
+using System;
+using System.Collections.Generic;
+
+namespace MackySoft.SerializeReferenceExtensions.Editor
+{
+    public interface ITypeCandiateProvider
+	{
+		IEnumerable<Type> GetTypeCandidates (Type baseType);
+    }
+}

…ions/Editor/IIntrinsicTypePolicy.cs.meta …/TypeSearch/IIntrinsicTypePolicy.cs.metaAssets/MackySoft/MackySoft.SerializeReferenceExtensions/Editor/IIntrinsicTypePolicy.cs.meta renamed to Assets/MackySoft/MackySoft.SerializeReferenceExtensions/Editor/TypeSearch/IIntrinsicTypePolicy.cs.meta Assets/MackySoft/MackySoft.SerializeReferenceExtensions/Editor/IIntrinsicTypePolicy.cs.meta renamed to Assets/MackySoft/MackySoft.SerializeReferenceExtensions/Editor/TypeSearch/IIntrinsicTypePolicy.cs.meta

@@ -0,0 +1,9 @@
+using System;
+
+namespace MackySoft.SerializeReferenceExtensions.Editor
+{
+    public interface ITypeCompatibilityPolicy
+    {
+        bool IsCompatible (Type baseType, Type candiateType);
+    }
+}

Assets/MackySoft/MackySoft.SerializeReferenceExtensions/Editor/TypeSearch/ITypeCandiateProvider.cs

@@ -2,11 +2,6 @@
 
 namespace MackySoft.SerializeReferenceExtensions.Editor
 {
-    public interface IIntrinsicTypePolicy
-    {
-        bool IsAllowed (Type candiateType);
-    }
-
     public sealed class DefaultIntrinsicTypePolicy : IIntrinsicTypePolicy
     {