Core: If configured, sync SD card image with SD card folder on emulation start and end.

Co-authored-by: Pablo Stebler <pablo@stebler.xyz>

Source/Core/Common/FatFsUtil.h

@@ -0,0 +1,12 @@
+// Copyright 2022 Dolphin Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "Common/CommonTypes.h"
+
+namespace Common
+{
+bool SyncSDFolderToSDImage();
+bool SyncSDImageToSDFolder();
+}  // namespace Common