Modify and restore NVIDIA control panel settings

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

src/platform/windows/nvprefs/driver_settings.h

@@ -0,0 +1,36 @@
+#pragma once
+
+#include "undo_data.h"
+
+namespace nvprefs {
+
+  class driver_settings_t {
+  public:
+    ~driver_settings_t();
+
+    bool
+    init();
+
+    void
+    destroy();
+
+    bool
+    load_settings();
+
+    bool
+    save_settings();
+
+    bool
+    restore_global_profile_to_undo(const undo_data_t &undo_data);
+
+    bool
+    check_and_modify_global_profile(std::optional<undo_data_t> &undo_data);
+
+    bool
+    check_and_modify_application_profile(bool &modified);
+
+  private:
+    NvDRSSessionHandle session_handle = 0;
+  };
+
+}  // namespace nvprefs