Correctly implement the ScreenUtils class

Source/Engine/Platform/Base/ScreenUtilsBase.cpp

@@ -0,0 +1,11 @@
+#include "ScreenUtilsBase.h"
+#include "Engine/Core/Math/Color32.h"
+#include "Engine/Core/Math/Vector2.h"
+
+Color32 ScreenUtilsBase::GetPixelAt(int32 x, int32 y) {
+    return Color32::Black;
+}
+
+Int2 ScreenUtilsBase::GetScreenCursorPosition() {
+    return { 0, 0 };
+}