Treewide: Adjust order of includes

Source/Core/DiscIO/GameModDescriptor.cpp

@@ -1,13 +1,13 @@
 // Copyright 2021 Dolphin Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
+#include "DiscIO/GameModDescriptor.h"
+
 #include <optional>
 #include <string>
 #include <string_view>
 #include <vector>
 
-#include "DiscIO/GameModDescriptor.h"
-
 #include <picojson.h>
 
 #include "Common/IOFile.h"