Add component editors and UI controls

Added the `HierarchyEditor` and `LocalToWorldEditor` classes to implement custom component editing functionality.
Added the `Vector3Field` control for 3D vector manipulation and its corresponding XAML definition.
Added the `ComponentDataView` and `ComponentObject` classes to manage component data display and access.
Added the `CustomEditorAttribute` to mark classes as custom editors for specific components.

Changed the `IInspectable` interface to use properties for `Icon`, `HeaderContent`, and `InspectorContent`.
Changed the `PropertyField` class to enhance UI control binding capabilities.
Changed the `EditorWorldManager` to improve world data loading and deserialization processes.
Changed the `EntityNode` and `WorldNode` classes to update entity construction and component querying.
Changed the `StaticResource` class to include new binding flags for component properties.
Changed the `InspectorService` to remove old contract references and adopt new interfaces.
Changed the `QueryEnumerable` and related files to update generic constraints for improved type safety.
Changed the `QueryItem` class to reflect new generic constraints and enhance deconstruction.
Changed the `World.Query` methods to utilize the updated generic constraints.

Updated the `SerializationTest` to align with new entity creation and management practices.

Ghost.Entities/World.cs

@@ -67,7 +67,7 @@ public partial class World : IDisposable, IEquatable<World>
 
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
     public Ref<T> GetSingleton<T>()
-        where T : struct, IComponentData
+        where T : unmanaged, IComponentData
     {
         ref var component = ref CollectionsMarshal.GetValueRefOrAddDefault(SingletonContainer<T>.container, _id, out _);
         return new Ref<T>(ref component);
@@ -113,6 +113,11 @@ public partial class World : IDisposable, IEquatable<World>
         return _id.GetHashCode();
     }
 
+    public override bool Equals(object? obj)
+    {
+        return obj is World other && Equals(other);
+    }
+
     public static bool operator ==(World? left, World? right)
     {
         return left?.Equals(right) ?? right is null;