Refactor and enhance resource management and rendering

Updated multiple components to improve encapsulation, maintainability, and performance. Key changes include:

- Upgraded package dependencies in project files.
- Refactored `Mesh` and `RenderingContext` to use properties and added support for per-object constant buffers.
- Improved resource management in `D3D12CommandBuffer`, `D3D12CommandQueue`, and `D3D12ResourceAllocator` with better encapsulation and disposal handling.
- Added validation for constant buffer sizes in `D3D12PipelineLibrary`.
- Simplified `MeshBuilder` methods to accept allocators and removed hardcoded values.
- Enhanced debugging with `GPUResourceLeakException` and resource tracking updates.
- Updated shaders and rendering logic for testing, including hardcoded triangle rendering.
- Removed redundant base classes and interfaces for cleaner code structure.

Ghost.Graphics/Core/RootSignatureLayout.cs

@@ -1,3 +1,6 @@
+using Misaki.HighPerformance.Mathematics;
+using System.Runtime.InteropServices;
+
 namespace Ghost.Graphics.Core;
 
 /// <summary>
@@ -40,4 +43,14 @@ public static class RootSignatureLayout
     4
 #endif
     ;
-}
+}
+
+[StructLayout(LayoutKind.Sequential, Pack = 1)]
+public struct PerObjectData
+{
+    public float4x4 localToWorld;
+    public float3 worldBoundsMin;
+    public uint vertexBuffer;
+    public float3 worldBoundsMax;
+    public uint indexBuffer;
+};