Refactor component registration, update deps, improve JSON

- Updated Misaki.HighPerformance package versions in Core and Graphics projects.
- Added IsTrimmable to Ghost.Engine.csproj for trimming support.
- Renamed GetOrRegisterComponent to GetOrRegisterComponentID and updated all usages.
- Component registration codegen now uses a static class with [ModuleInitializer], no longer requires [EngineEntry].
- Improved JSON serialization: added string support, introduced Utf8JsonObjectScope/ArrayScope, and new extension methods for cleaner JSON writing.
- Removed [SkipLocalsInit] from Hierarchy and LocalToWorld.
- Fixed Entity.Invalid to use INVALID_ID for both fields.
- Minor cleanup: clarified comments, reorganized Ghost.Generator in solution, and disabled component serialization generator.

Ghost.Editor.Core/SceneGraph/WorldNode.cs

@@ -10,6 +10,7 @@ using Microsoft.UI.Xaml.Controls;
 
 namespace Ghost.Editor.Core.SceneGraph;
 
+// FIX: This should be scene node, not world node
 [CustomSerializer(typeof(WorldNodeSerializer))]
 public partial class WorldNode : SceneGraphNode, IEquatable<WorldNode>
 {