Add initial base implementation for WebGPU rendering backend

Source/Engine/GraphicsDevice/WebGPU/GPUSwapChainWebGPU.h

@@ -0,0 +1,41 @@
+// Copyright (c) Wojciech Figat. All rights reserved.
+
+#pragma once
+
+#include "GPUDeviceWebGPU.h"
+#include "GPUTextureWebGPU.h"
+#include "Engine/Graphics/GPUSwapChain.h"
+
+#if GRAPHICS_API_WEBGPU
+
+/// <summary>
+/// Graphics Device rendering output for Web GPU backend.
+/// </summary>
+class GPUSwapChainWebGPU : public GPUResourceWebGPU<GPUSwapChain>
+{
+    friend class WindowsWindow;
+    friend class GPUContextWebGPU;
+    friend GPUDeviceWebGPU;
+private:
+    GPUTextureViewWebGPU _surfaceView;
+
+public:
+    GPUSwapChainWebGPU(GPUDeviceWebGPU* device, Window* window);
+
+public:
+    WGPUSurface Surface = nullptr;
+
+public:
+    // [GPUSwapChain]
+    bool IsFullscreen() override;
+    void SetFullscreen(bool isFullscreen) override;
+    GPUTextureView* GetBackBufferView() override;
+    void Present(bool vsync) override;
+    bool Resize(int32 width, int32 height) override;
+
+protected:
+    // [GPUResourceWebGPU]
+    void OnReleaseGPU() final override;
+};
+
+#endif