Add Ghost.Nvtt C# wrapper and integrate nvtt texture pipeline

- Introduce full managed C# wrapper for NVIDIA Texture Tools (nvtt) with safe handle classes, idiomatic APIs, and managed callback support.
- Integrate Ghost.Nvtt into Ghost.Editor.Core and Ghost.MicroTest; update TextureAssetHandler to use the new nvtt wrapper for texture compression.
- Add comprehensive end-to-end binding test (NvttBindingTest).
- Refactor D3D12 resource management: add deferred/immediate release APIs, update allocator/database usage, and ensure proper resource cleanup.
- Update project files for new native DLL layout and dependency versions.
- Minor API cleanups: EditorApplication properties, D3D12 input layout, and removal of obsolete code.
- Update shaders, tests, and documentation for new APIs and usage patterns.

src/Runtime/Ghost.Graphics/Core/Material.cs

@@ -35,10 +35,9 @@ internal struct CBufferCache : IResourceReleasable
         }
 
         _cpuData.Dispose();
+        database.ScheduleReleaseResource(_gpuResource.AsResource());
 
-        database.ReleaseResource(GpuResource.AsResource());
         _gpuResource = Handle<GraphicsBuffer>.Invalid;
-
         _size = 0;
     }
 }

src/Runtime/Ghost.Graphics/Core/Mesh.cs

@@ -117,9 +117,9 @@ public struct Mesh : IResourceReleasable
     {
         ReleaseCpuResources();
 
-        database.ReleaseResource(VertexBuffer.AsResource());
-        database.ReleaseResource(IndexBuffer.AsResource());
-        database.ReleaseResource(ObjectDataBuffer.AsResource());
+        database.ScheduleReleaseResource(VertexBuffer.AsResource());
+        database.ScheduleReleaseResource(IndexBuffer.AsResource());
+        database.ScheduleReleaseResource(ObjectDataBuffer.AsResource());
     }
 }