Added new RHI abstraction layer;

Added new console debug page to UnitTest;

Ghost.Graphics/RHI/IRenderDevice.cs

@@ -0,0 +1,72 @@
+namespace Ghost.Graphics.RHI;
+
+/// <summary>
+/// D3D12-native render device interface for creating graphics resources
+/// </summary>
+public interface IRenderDevice : IDisposable
+{
+    /// <summary>
+    /// Graphics command queue for rendering operations
+    /// </summary>
+    ICommandQueue GraphicsQueue { get; }
+
+    /// <summary>
+    /// Compute command queue for compute shader operations
+    /// </summary>
+    ICommandQueue ComputeQueue { get; }
+
+    /// <summary>
+    /// Copy command queue for data transfer operations
+    /// </summary>
+    ICommandQueue CopyQueue { get; }
+
+    /// <summary>
+    /// Creates a command buffer for recording rendering commands
+    /// </summary>
+    /// <param name="type">Type of command buffer to create</param>
+    /// <returns>A new command buffer instance</returns>
+    ICommandBuffer CreateCommandBuffer(CommandBufferType type = CommandBufferType.Graphics);
+
+    /// <summary>
+    /// Creates a swap chain for presentation
+    /// </summary>
+    /// <param name="desc">Swap chain description</param>
+    /// <returns>A new swap chain instance</returns>
+    ISwapChain CreateSwapChain(SwapChainDesc desc);
+
+    /// <summary>
+    /// Creates a render target for off-screen rendering
+    /// </summary>
+    /// <param name="desc">Render target description</param>
+    /// <returns>A new render target instance</returns>
+    IRenderTarget CreateRenderTarget(RenderTargetDesc desc);
+
+    /// <summary>
+    /// Creates a texture resource
+    /// </summary>
+    /// <param name="desc">Texture description</param>
+    /// <returns>A new texture instance</returns>
+    ITexture CreateTexture(TextureDesc desc);
+
+    /// <summary>
+    /// Creates a buffer resource
+    /// </summary>
+    /// <param name="desc">Buffer description</param>
+    /// <returns>A new buffer instance</returns>
+    IBuffer CreateBuffer(BufferDesc desc);
+
+    /// <summary>
+    /// Gets the descriptor allocator for managing descriptors
+    /// </summary>
+    IDescriptorAllocator DescriptorAllocator { get; }
+}
+
+/// <summary>
+/// Command buffer types matching D3D12 command list types
+/// </summary>
+public enum CommandBufferType
+{
+    Graphics,
+    Compute,
+    Copy
+}