feat(render): add meshlet rendering and ECS query ref API

Introduces meshlet-based rendering pipeline with new HLSL structures and push constant layouts. Refactors meshlet upload/cooking, updates RenderGraphContext for global/view/instance data, and enhances ECS QueryBuilder with ref returns and [UnscopedRef] for fluent chaining. Improves resource management and disposal patterns, updates D3D12 interop for compatibility, and refines test/app infrastructure. Includes dependency updates, bug fixes, and code cleanups.

src/Runtime/Ghost.Graphics/Shaders/Includes/Common.hlsl

@@ -10,6 +10,18 @@ struct Vertex
     float4 color;
 };
 
+struct Meshlet
+{
+    float4 boundingSphere;
+    float3 boundingBoxMin;
+    float3 boundingBoxMax;
+    uint vertexOffset;
+    uint triangleOffset;
+    uint groupIndex;
+    float parentError;
+    uint packedCounts; // byte vertexCount, byte triangleCount, byte localMaterialIndex, byte lodLevel
+};
+
 // Resource descriptor heap definitions
 
 #define GLOBAL_TEXTURE2D_HEAP ResourceDescriptorHeap