First pass removing OpenGL stuff and converting to dx12

- Removed OpenGL stuff and replaced/stubbed things with dx12
- Removed .github actions stuff as we are now on gitea and wont be using
  it

include/window.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include <memory>
+
+namespace dx12_starter
+{
+
+struct WindowCreateParams
+{
+	int x;
+	int y;
+	int width;
+	int height;
+	const char* name;
+};
+
+class IWindow
+{
+public:
+	virtual ~IWindow() = default;
+
+	virtual void PumpMessages() = 0;
+	virtual bool IsOpen() const = 0;
+	virtual void* GetNativeHandle() const = 0;
+
+	static std::unique_ptr<IWindow> Create(WindowCreateParams params);
+};
+
+} // namespace starter_window