Refactor: add command allocator & render target strategies

Major refactor of graphics infrastructure:
- Introduce ICommandAllocator and D3D12CommandAllocator for explicit command buffer management.
- Change ICommandBuffer.Begin to require an allocator.
- Add IRenderTargetStrategy abstraction with swap chain and texture implementations.
- Update IRenderer to use RenderTargetStrategy instead of direct handle.
- Add DPI scaling support to swap chains (ScaleX/ScaleY, SetScale).
- RenderSystem now supports thread-safe swap chain resize requests.
- Remove persistent copy command buffer; use per-frame allocators.
- Make Logger public/static and clean up API visibility.
- Update .editorconfig and debug layer enablement.
These changes improve modularity, DPI-awareness, and future extensibility.

Ghost.Graphics/D3D12/D3D12CommandAllocator.cs

@@ -0,0 +1,34 @@
+using Ghost.Core.Utilities;
+using Ghost.Graphics.D3D12.Utilities;
+using Ghost.Graphics.RHI;
+using Misaki.HighPerformance.LowLevel;
+using TerraFX.Interop.DirectX;
+
+namespace Ghost.Graphics.D3D12;
+
+internal unsafe class D3D12CommandAllocator : ICommandAllocator
+{
+    private UniquePtr<ID3D12CommandAllocator> _allocator;
+
+    public SharedPtr<ID3D12CommandAllocator> NativeAllocator => _allocator.Share();
+
+    public D3D12CommandAllocator(D3D12RenderDevice device, CommandBufferType type)
+    {
+        ID3D12CommandAllocator* pAllocator = default;
+        var commandListType = D3D12Utility.ToCommandListType(type);
+
+        device.NativeDevice.Get()->CreateCommandAllocator(commandListType, __uuidof(pAllocator), (void**)&pAllocator);
+
+        _allocator.Attach(pAllocator);
+    }
+
+    public void Reset()
+    {
+        _allocator.Get()->Reset();
+    }
+
+    public void Dispose()
+    {
+        _allocator.Dispose();
+    }
+}