Modify and restore NVIDIA control panel settings

Namely:
- Power profile for sunshine.exe
- Global OpenGL/Vulkan DXGI swapchain

src/platform/windows/nvprefs/undo_file.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include "undo_data.h"
+
+namespace nvprefs {
+
+  class undo_file_t {
+  public:
+    static std::optional<undo_file_t>
+    open_existing_file(std::filesystem::path file_path, bool &access_denied);
+
+    static std::optional<undo_file_t>
+    create_new_file(std::filesystem::path file_path);
+
+    bool
+    delete_file();
+
+    bool
+    write_undo_data(const undo_data_t &undo_data);
+
+    std::optional<undo_data_t>
+    read_undo_data();
+
+  private:
+    undo_file_t() = default;
+    safe_handle file_handle;
+  };
+
+}  // namespace nvprefs