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/RHI/IGraphicsEngine.cs

@@ -1,3 +1,4 @@
+using Ghost.Core;
 using Ghost.Graphics.Contracts;
 
 namespace Ghost.Graphics.RHI;
@@ -47,18 +48,8 @@ public interface IGraphicsEngine : IDisposable
     /// <returns>A new swap chain instance</returns>
     ISwapChain CreateSwapChain(SwapChainDesc desc);
 
-    /// <summary>
-    /// Begins a new rendering frame, preparing the graphics context for drawing operations.
-    /// </summary>
-    void BeginFrame();
-
     /// <summary>
     /// Renders the current frame.
     /// </summary>
     void RenderFrame();
-
-    /// <summary>
-    /// Completes the current rendering frame and performs any necessary finalization steps.
-    /// </summary>
-    void EndFrame();
 }