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.Engine/Utilities/Utf8JsonWriterExtension.cs

@@ -2,6 +2,34 @@ using System.Text.Json;
 
 namespace Ghost.Engine.Utilities;
 
+public readonly ref struct Utf8JsonObjectScope : IDisposable
+{
+    private readonly Utf8JsonWriter _writer;
+    public Utf8JsonObjectScope(Utf8JsonWriter writer)
+    {
+        _writer = writer;
+        _writer.WriteStartObject();
+    }
+    public void Dispose()
+    {
+        _writer.WriteEndObject();
+    }
+}
+
+public readonly ref struct Utf8JsonArrayScope : IDisposable
+{
+    private readonly Utf8JsonWriter _writer;
+    public Utf8JsonArrayScope(Utf8JsonWriter writer)
+    {
+        _writer = writer;
+        _writer.WriteStartArray();
+    }
+    public void Dispose()
+    {
+        _writer.WriteEndArray();
+    }
+}
+
 public static class Utf8JsonWriterExtension
 {
     public static void WriteArray<T>(this Utf8JsonWriter writer, ReadOnlySpan<char> name, IEnumerable<T> source, Action<T> writeAction)
@@ -37,4 +65,14 @@ public static class Utf8JsonWriterExtension
         writeAction();
         writer.WriteEndObject();
     }
+
+    public static Utf8JsonObjectScope StartObjectScope(this Utf8JsonWriter writer)
+    {
+        return new Utf8JsonObjectScope(writer);
+    }
+
+    public static Utf8JsonArrayScope StartArrayScope(this Utf8JsonWriter writer)
+    {
+        return new Utf8JsonArrayScope(writer);
+    }
 }