Add render graph proof of concept and refactor graphics

Implemented a transient render graph system as a proof of concept, including resource aliasing, pass culling, and typed pass data. Added new project `Ghost.RenderGraph.Concept` targeting `.NET 10.0`.

Refactored graphics-related components:
- Simplified resource state transitions in `RenderingContext`.
- Improved resize handling in `GraphicsTestWindow`.
- Updated `D3D12GraphicsEngine` to streamline frame rendering.
- Enhanced `D3D12ResourceDatabase` and `D3D12SwapChain` for better resource management.

Added detailed documentation:
- `ALIASING.md` explains resource aliasing techniques.
- `API_DESIGN.md` outlines the render graph API design.

Updated solution to include the new render graph project.

Ghost.Graphics/D3D12/D3D12CommandBuffer.cs

@@ -291,6 +291,11 @@ internal unsafe class D3D12CommandBuffer : ICommandBuffer
         }
 
         ref var record = ref recordResult.Value;
+        if (record.state == stateAfter)
+        {
+            return;
+        }
+
         var barrier = D3D12_RESOURCE_BARRIER.InitTransition(record.ResourcePtr,
             record.state.ToD3D12States(), stateAfter.ToD3D12States());